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Flower. Photo from Chris Garnons-Williams on 7 June 2013. |
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Plant Name |
Iris pallida 'Argentea Variegata' |
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Common Name |
Zebra Iris, Silver-variegated Sweet Iris |
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Soil |
Sand or Loam (Neutral to slightly acidic) |
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Sun Aspect |
Full Sun |
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Soil Moisture |
Moist and Well-drained |
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Plant Type |
Herbaceous Perennial |
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Height x Spread in inches (cms) |
23 x 18 (57 x 45) |
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Foliage |
Sword-like leaves, with silvery-white and grey-green stripes running lengthwise, remaining nearly evergreen in mild winter regions |
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Flower Shape, Natural Arrangement, Number of Petals and Flower Colour in Month(s). Seed |
Lavender-Blue, 6 Petal flowers in May-June |
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Comment |
Erect Form. Pruning Group 14. "Also known as the Zebra Iris, this is a very old garden plant, still as popular as ever. It forms a low clump of sword-like leaves, with silvery-white and grey-green stripes running lengthwise, remaining nearly evergreen in mild winter regions. Fragrant lavender-blue flowers appear in early summer. Excellent for cutting. Plants must have excellent drainage, particularly in hot, humid summer regions or areas with wet winters. Clumps may be easily divided every 3 to 4 years in late summer, exactly as you would treat a Bearded Iris." from Heritage Perennials. "Iris may be rhizomatous or bulbous perennials, with narrowly leaves and erect stems bearing flowers with 3 large spreading or pendent fall petals, alternating with 3 erect, often smaller, standard petals, in late winter, spring or early summer Tall Bearded irises are herbaceous rhizomatous perennials to 70cm or more, with flowers 10-20cm across, bearded on the falls, in late spring and early summer 'Argentea Variegata' is a semi-evergreen plant with sword-shaped grey-green leaves edged with white, and fragrant light blue-purple flowers 10cm wide in early summer, the falls with purple veins on white near the base. Remove any dying foliage in autumn, old flower stems can be cut down after flowering. Tall varieties can have their leaf fans trimmed to one third of the total height to reduce wind rock while the plants are establishing. " from Royal Horticultural Society. "Plant shallowly with the upper part of the rhizome sitting on the surface of the soil, incorporating a low nitrogen fertiliser in the planting hole. After planting remove the upper-most third of the leaves to minimise the incidence of wind-rock. In exposed areas stake with bamboo canes in early spring." from Crocus . Available from Crocus in the UK with Walters Gardens in America. |
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Companions |
... |
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Flowers mixed with Allium christophii. Photo from Chris Garnons-Williams on 7 June 2013. |
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Seed Head of Allium christophii with the Iris. Photo from H. Kavanagh on 21 August 2013. |
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Winter Form next to front path from Mixed Borders at RHS Wisley. Photo from Chris Garnons-Williams on 4 March 2013. |
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Spring Form from Mixed Borders at RHS Wisley. Photo from Chris Garnons-Williams on 25 April 2013. |
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Spring Form from Mixed Borders at RHS Wisley. Photo from Chris Garnons-Williams on 13 May 2013. |
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Summer Form from Mixed Borders at RHS Wisley. Photo from Chris Garnons-Williams on 7 June 2013. |
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Late Summer Form with seed heads from Allium christophii from Mixed Borders at RHS Wisley. Photo from H. Kavanagh on 21 August 2013. |
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Winter Foliage from Mixed Borders at RHS Wisley. |
Spring Foliage from Mixed Borders at RHS Wisley. Photo from Chris Garnons-Williams on 25 April 2013. |
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Spring Foliage from Mixed Borders at RHS Wisley. |
Autumn Foliage from Mixed Borders at RHS Wisley. |
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Flower and buds Group from Mixed Borders at RHS Wisley. |
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MIXED BORDER RHS WISLEY HERBACEOUS PERENNIALS GALLERY PAGES |
FOLIAGE COLOUR |
SEED/FRUIT COLOUR FLOWER BED PICTURES |
Starting with the data in Garden Style followed by Infill Plants, then you can refine your plant list from the remaining galleries in this cell:- |
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PERENNIAL |
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HERBACEOUS PERENNIAL Gallery with 7 Flower Colours (Red, Pink and Purple on same page) per Month in Colour Wheel. Click on Black or White box in Colour of Month. |
HERBACEOUS PERENNIAL INDEX -
The variety of plants that can be used in alpine gardening is obviously very large and very bewildering at first approach. With a view to easing the task of selection here are lists The standard potting and seed-soil recipes from The Propagation of Alpines by Lawrence D. Hills are at the bottom of the page on Alpine - Sink and Trough Gardens. |
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To compare |
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with 7 Flower Colours - Blue, White, Yellow, Green for Unusual, Red, Orange and Pink per Month in Colour Wheel below. Click on Black or White box in Colour of Month. |
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The Herbaceous Perennials in this gallery are not compared with other Herbaceous Perennials in the HERBACEOUS PERENNIAL GALLERY, but they are compared with each other in the Mixed Border Garden Design Gallery using the above 7 Flower Colours per month Wheel. FLOWER COLOUR RANGE IN 71 PARTS OF RHS WISLEY MIXED BORDER DURING After reviewing the situation in the |
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Blue = |
Green = |
Red = |
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Brown = |
Blue = |
Green = |
Red = |
Black = |
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Wet Soil |
Moist Soil |
Dry Soil |
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Flowering Months range abbreviates month Click on centre of thumbnail to move from this page to the The Comments Row of that Plant Description |
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Herbaceous Perennial |
Flowering Months |
Height x Width in inches (cms) - 1 inch = 2.5 cms, 12 inches = 1 foot = 30 cms, 36 inches = 3 feet = 1 yard = 90 cms, 40 inches = 100 cms |
Flower Thumb-nail |
Herbaceous Perennial Flower Thumbnail |
Flowering Months |
Height x Width in inches (cms) - 1 inch = 2.5 cms, 12 inches = 1 foot = 30 cms, 36 inches = 3 feet = 1 yard = 90 cms, 40 inches = 100 cms |
Flower Thumb-nail |
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Alpine Herbaceous Perennial if Text Background is Blue |
Alpine Herbaceous Perennial if Text Background is Blue |
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Evergreen or Semi-Evergreen Perennial |
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A |
A |
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May, June, |
48-60 x 24 |
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96 x 40 |
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June, July, August, |
36 x 24 |
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48 x 24 |
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June, July, |
48 x 18 |
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40-60 x 20-40 (100-150 x 50-100) |
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June, July, |
36 x 18 |
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June, July, |
60 x 40 |
Creamy-White. |
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June, July, |
48 x 24 |
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32-39 x 24 (80-100 x 60) |
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May, June, |
36 x 24 |
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July, August, September |
64 x 16 |
Violet-Blue. |
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June, July, |
20 x 15 |
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August, September |
96 x 40 |
Dark Blue. |
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June, July, August, |
28 x 18 |
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July, August |
40-60 x 4-20 (100-150 x 10-50) |
Violet-Blue. |
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June, July, August, |
36 x 16 |
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24-48 x 18-24 |
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June, July, August, |
36-42 x 12 |
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48 x 36 |
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June, July, |
16-48 x 12 |
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70 x 40 |
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July, August, |
42 x 36 |
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August, September, October |
80 x 24 |
Creamy-White. |
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July, August |
40 x 80 |
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60 x 24 |
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December, January, |
18 x 30 |
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40 x 20 |
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July, August, |
30 x 18 |
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60 x 24 |
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June, July |
20 x 18 |
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18 x 12 |
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July, August, |
24 x 24 |
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July, August |
36 x 20 |
White. |
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July, August, |
30 x 24 |
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32 x 24 |
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June, July |
72-96 x 24 |
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36 x 16 |
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June, July |
72-96 x 24 |
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40 x 16 |
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June, July |
72-96 x 24 |
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July, August, September, October |
48 x 24 |
White. |
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June, July |
72-96 x 24 |
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24 x 16 |
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June, July |
72-96 x 24 |
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20-40 x 4-20 |
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June, July |
72 x 24 |
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28 x 24 |
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June, July, |
4 x 20 |
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July, August, September |
72 x 60 |
Pinkish-Lavender |
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June, July, |
16 x 12 |
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60-100 x 40-60 |
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July |
24 x 230 |
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20-40 x 20-40 |
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June, July, |
36 x 24 |
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August, September, October |
24-40 x 24-40 |
Pale Pink. |
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August, September, |
36 x 24 |
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40-60 x 20-40 |
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Pink - July, August or |
24 x 16 |
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60 x 24 |
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July, August |
36 x 18 |
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July, August, September |
60 x 24 |
Cream. |
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July, August |
25 x 16 |
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August, September |
24 x 24 |
Yellowish-Brown. |
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May, June |
16 x 18 |
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July, August, September |
60 x 18-24 |
Pink. |
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May, June |
30 x 12 |
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September, October |
12-36 x 12-36 |
White. |
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June, July, August, September, October |
36 x 12 |
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July, August, September, October |
4-20 x 4-20 |
Red and White. |
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July, August, |
28 x 16 |
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September, October |
52 x 24 |
Mauve-Pink. |
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August, September, |
12 x 12 |
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September, October |
60 x 16-24 |
Lilac-Blue. |
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July |
30 x 18 |
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August, September |
12-18 x 8-12 |
Purple-Pink. |
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August, September |
8-12 x 10 |
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45 x 78 |
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June |
20-24 x 12 |
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September, October |
48 x 36 |
Purple-Red. |
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July |
24 x 18 |
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August, September, October, November |
48-60 x 24 |
Pale Violet. |
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July, August |
39 x 24 |
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24 x 16 |
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August, September |
48 x 24 |
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B |
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June, July |
18-24 x 18 (45-60 x 45) |
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40-60 x 20-40 |
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July, August |
24 x 18 |
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C |
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July, August |
8-18 x 12 |
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60 x 24 |
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June, July |
24 x 18 |
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48 x 20 |
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B |
24-36 x 18-30 |
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April, May |
12-18 x 24 |
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24 x 12 |
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April, May |
12-18 x 18 (30-45 x 45) |
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June, July |
60-100 x 40-60 |
White. |
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June, July, August, |
24 x 18 |
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20-40 x 4-20 |
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C |
24 x 24 |
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April |
9 x 12 |
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August, September, October |
35 x 23 |
Opening Orange fades to Pink. |
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June, July, |
2 x 12 |
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36 x 18 |
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June, July, |
36-48 x 24 |
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June, July, August, September |
60 x 48 |
Purple. |
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June, July, |
24 x 24 |
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D |
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July, August, September, |
36 x 24 |
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May, June, July, August |
80 x 40 |
Creamy-Yellow-Green. |
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D |
E |
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July, August, September |
60 x 18 |
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18-24 x 14 |
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Links to the other 22 Diascia Pages are in Alpine / Herbaceous Perennial Index D Page |
June, July, August, |
6 x 20 |
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40 x 18 |
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May, June |
18 x 30 |
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28 x 16 |
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May, June |
24-36 x 20 |
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39 x 39 |
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E |
July, August |
18-48 x 24 |
Bright Blue. |
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July, August, September |
30-48 x 18 (75-120 x 45) |
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40-60 x 20-40 |
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F |
12-60 x 24 |
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June |
6 x 6 |
White |
88 x 40 |
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G |
Eupatorium maculatum (Atropur-pureum Group) 'Riesen-schirm' |
July, August, September |
80 x 80 |
Pink-Purple. |
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August, September |
24 x 18 |
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August, September, October |
60-100 x 20-40 |
Purplish-Pink. |
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June, July |
32 x 18 |
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24 x 20 |
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June, July |
12 x 12 |
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F |
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July, August, |
4 x 12 |
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60-100 x 20-40 |
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July, August |
60 x 72 |
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July, August |
72 x 18 |
Sulphur-Yellow. |
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H |
60 x 20 |
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September, October, |
60 x 18 |
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G |
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August |
48 x 30 |
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48 x 36 |
White. |
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August |
20 x 36 |
Deep Violet |
48 x 32 |
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July |
36 x 48 |
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36 x 36 |
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K |
Geranium 'Rozanne' |
24 x 16 |
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September, October |
24 x 18 |
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24 x 18 |
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July, August |
36 x 24 |
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24 x 20 |
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September, October |
30 x 18 |
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H |
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L |
July, August, September |
72 x 24 |
Yellow. |
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May, June, |
24 x 12 |
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June, July, August |
36 x 24 |
Brick Orange Red. |
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April, May, |
12 x 18 |
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38-51 x 16 |
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August, September, |
48 x 36 |
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20-40 x 4-20 |
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June, July, |
3 x 6 |
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72 x 24 |
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June, July |
12 x 12 |
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20-40 x 4-20 |
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June, July, August, |
36 x 12 |
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September, October |
96-120 x 12-36 |
Yellow rays and dark Brown disc. If it flowered in Sep-Oct, I missed taking their photos |
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April, May, |
48 x 24 |
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80 x 48 |
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May, June |
12 x 18 |
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80 x 18 |
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July, August |
36 x 24 |
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23 x 30 |
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M |
20 x 40 |
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May, June, |
12 x 36 |
Yellow with |
30 x 24 |
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May, June, |
12 x 24 |
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32 x 40 |
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P |
18 x 12 |
Cream. |
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June, July |
36 x 36 |
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26 x 20 |
Pale Pink. |
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May, June |
36 x 36 |
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I |
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June, July |
30 x 30 |
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72 x 36 |
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May, June |
16 x 16 |
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72 x 60 |
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Paeonia |
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23 x 18 |
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May, June |
6 x 4 |
Pinkish-blue |
J, K |
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May, June |
... |
Yellow, Purple, Red, Pink |
32 x 24 |
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May, June |
6 x 5 |
Pink |
40 x 20 |
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May, June |
6 x 3.5 |
Purple |
August, September |
120 x 48 |
Orange-red fades to yellow. |
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May, June |
6 x 3 |
Red |
June, July, August, September |
48 x 32 |
Lemon-Yellow. |
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May, June |
6 x 5 |
White |
July, August, September |
40 x 30 |
Light Scarlet fades to Yellow. |
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May, June |
6 x 3 |
Yellow |
June, July, August |
36 x 24 |
Orange top with Ivory-White bottom. |
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L |
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June, July, |
12 x 6 |
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August, September, October, November |
60 x 40 |
White. |
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May, June, |
36 x 24 |
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36 x 36 |
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May |
4-8 x 8 |
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48 x 48 |
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S |
30 x 18 |
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September |
18 x 18 |
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Lychnis coronaria 'Gardener's World' |
24 x 10-12 |
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D |
40 x 24 |
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May |
24-48 x 48 |
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60 x 20 |
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36 x 18 |
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M |
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100 x 60 |
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June, July |
88 x 40 |
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June, July |
80 x 48 |
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June, July, August |
55 x 55 |
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June, July, August, September |
24 x 18 |
White. |
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July, August, September |
60 x 20 |
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June, July, August |
36 x 15 |
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N |
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June, July, August, September |
36 x 24 |
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June, July, August |
48 x 36 |
Lilac-Pink. |
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June, July, August, September |
24 x 20 |
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O |
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June, July, August, September |
18 x 24 |
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July, August, September, October |
18 x 18 |
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P |
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July, August, September |
70 x 24 |
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July, August, September |
70 x 24 |
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June, July, August, September |
40 x 30 |
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July, August, September, October |
48 x 48 |
Bright Red. |
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July, August, September, October, November |
18 x 18 |
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June, July, August, September |
50 x 60 |
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Persicaria amplex-icaulis taurus |
July, August, September, October |
40 x 28 |
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July, August, September |
20 x 40 |
White. |
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June, July, August |
80 x 40 |
Pale Yellow. |
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May, June, July, August, September |
36 x 30 |
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July, August |
40 x 24 |
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July, August, September |
30 x 20 |
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July, August, September |
30 x 30 |
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July, August, September |
36 x 24 |
Lilac. |
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July, August, September |
18 x 14 |
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July, August, September |
24 x 16 |
White. |
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July, August, September |
40 x 20 |
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Dear Mr C H Garnons-Williams, Tony Dickerson Horticultural Advisor Above email sent by the RHS on 13 September 2013 - plant label in Mixed Border bed still not changed by 23 November 2013. |
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July, August, September |
30 x 16 |
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July, August, September |
30 x 30 |
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July, August, September |
40 x 32 |
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July, August, September, October |
36 x 24 |
Red. |
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July, August, September |
24 x 24 |
Blue-Purple. |
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July, August, September |
36 x 12 |
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June, July, August, September |
24 x 18 |
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June, July, August |
16 x 12 |
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June, July, August |
16 x 12 |
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Q, R |
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August, September, October |
24 x 18 |
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June, July, August, September |
80 x 36 |
Yellow. |
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S |
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June, July, August |
30 x 24 |
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May, June, July, August, September |
18 x 18 |
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July, August, September, October |
24 x 20 |
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September, October |
20 x 16 |
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August, September |
40 x 20 |
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August, September, October |
12 x 12 |
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August, September, October, November |
18 x 18 |
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August, September |
18 x 18 |
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September, October, November |
24 x 18 |
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June, July, August |
32 x 24 |
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August, September, October |
60 x 32 |
Yellow. |
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June, July, August, September |
18 x 24 |
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June, July, August, September |
20 x 28 |
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August, September, October |
48 x 24 |
Violet-Blue. |
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June, July, August, September |
32 x 18 |
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T |
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June, July, August |
94 x 23 |
Lavender. |
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June, July, August |
59 x 23 |
Purple-Pink. |
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June, July |
48 x 48 |
Sulphur-Yellow. |
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June, July, August |
72 x 36 |
Purple-Pink or Lavender. |
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U, V |
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August, September, October |
60 x 18 |
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June, July, August, September, October |
24 x 16 |
Purple or Magenta. |
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June, July, August, September |
36 x 24 |
Pale Purple/ Lavend-erish Lilac. |
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June, July, August, September |
60 x 24 |
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July, August, September |
60 x 36 |
Pink Lavender/ Lilac. |
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July, August |
40 x 20 |
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July, August, September |
60 x 18 |
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June, July |
42 x 20 |
Lilac/ Pale Blue. |
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July, August, September |
60 x 26 |
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W, XYZ |
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May, June, July |
18 x 14 |
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Ivydene Gardens Herbaceous Perennial Flower Shape Gallery: |
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HERBACEOUS PERENNIAL FLOWER SHAPE AND OTHER DETAILS- |
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Number of Flower Petals |
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Flower Shape - Simple |
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Flower Shape - Elabor-ated |
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Natural Arrange-ments |
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Herbaceous Perennial Name Index The respective flower colour and thumbnail, months of flowering, form, height and width, foliage colour and thumbnail, use and comments are in the relevant index page Evergreen Perennial Name Index |
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UK Peony Index :- |
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Perennials & Ephemerals chapter of Plants for Dry Gardens by Jane Taylor. Published by Frances Lincoln Limited in 1993. ISBN 0-7112-0772-0 for plants that are drought tolerant. |
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Rock |
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Perennials for Ground Covering in Shade and 3 |
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Colour All The Year in My Garden by C.H. Middleton. Published by Ward, Lock & Co. for culture. Perennials The Gardener's Reference by Susan Carter, Carrie Becker and Bob Lilly. Published by Timber Press in 2007 for plants for Special Gardens. It also gives details of species and cultivars for each genus. |
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Herbaceous Perennial Form |
Prostrate or Trailing |
Cushion or Mound-forming |
Spreading or Creeping |
Stemless. Sword-shaped Leaves |
Erect or Upright |
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Herbaceous Perennial Use |
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Back of Border, Alley, and Too Tall for Words Special Garden |
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Herbaceous Perennial in Soil |
Clay + |
Peat + |
Any + |
+ Herbac-eous Perennials in Pages in Plants |
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Peony Use |
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