Form. Photo from H. Kavanagh on 21 August 2013. Click on photo from Plantify |
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Plant Name |
Achillea ptarmica 'Perry's White' Achillea was named by Linnaeus, the modern father of horticulture, in honour of the Greek hero Achilles. |
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Common Name |
Goosewort, Sneezewort. |
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Soil |
Chalk, Sand or Loam |
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Sun Aspect |
Full Sun, but prefers Part Shade |
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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) |
32-39 x 24 (80-100 x 60) |
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Foliage |
Linear-lance-shaped finely toothed dark green leaves. |
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Flower Shape, Natural Arrangement, Number of Petals and Flower Colour in Month(s). Seed |
Sprays of Pompom-shaped, clear White flowers in July-September |
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Comment |
Erect Form. Pruning Group 14. "Achillea is a lovely cottage garden plant, easy to grow and loved by both humans and insects. Hoverflies in particular seem to thrive on the flowers. Generally they have ferny, soft foliage, dark or grey green and then large, flat flower heads, made up of many tiny individual flowers. The foliage is often quite aromatic when crushed. Thrives in a sunny but well drained spot, and is tolerant of most conditions." from R.V. Roger. "Achillea ptarmica 'Perry's White' has tiny white double flowers with feathery, lanceolate dark green leaves. Prefering a moisture-retentive soil, Achillea ptarmica 'Perry's White' grows well in sun or part-shade, but prefers part-shade. Making a neat clump, grow in front of borders, containers or rock gardens." from Plantify. "Cut back to ground level in autumn. By division of clumps in early spring." from Deeproot Plant Base. "Pure white double flowers better than 'The Pearl', Jun-Sep, vigorous floppy growth to 60cm. Easy culture. Lovely. Dries well for winter - pick just before fully open." from Cotswold Garden Flowers. Available from Burncoose Nurseries , Beth Chatto Gardens and Plantify in the UK with Le Jardin du Pic Vert in France. Also available from Ballyrobert Cottage Garden & Nursery in County Antrim, Northern Ireland - "The most popular of the varieties we grow and sell have been tested in our own garden. |
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Companions |
... |
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Winter Form from Mixed Borders at RHS Wisley. Photo on 20 January from H. Kavanagh. |
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Spring Form in middle from Mixed Borders at RHS Wisley. Photo on 13 May 2013 from Chris Garnons-Williams. |
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Summer Form 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. |
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Flower from Mixed Borders at RHS Wisley. |
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Flower Group from Mixed Borders at RHS Wisley. |
Flower Bud 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 |
96 x 40 |
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June, July, August, |
36 x 24 |
48 x 24 |
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June, July, |
48 x 18 |
40-60 x 20-40 (100-150 x 50-100) |
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June, July, |
36 x 18 |
June, July, |
60 x 40 |
Creamy-White. |
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June, July, |
48 x 24 |
32-39 x 24 (80-100 x 60) |
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May, June, |
36 x 24 |
July, August, September |
64 x 16 |
Violet-Blue. |
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June, July, |
20 x 15 |
August, September |
96 x 40 |
Dark Blue. |
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June, July, August, |
28 x 18 |
July, August |
40-60 x 4-20 (100-150 x 10-50) |
Violet-Blue. |
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June, July, August, |
36 x 16 |
24-48 x 18-24 |
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June, July, August, |
36-42 x 12 |
48 x 36 |
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June, July, |
16-48 x 12 |
70 x 40 |
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July, August, |
42 x 36 |
August, September, October |
80 x 24 |
Creamy-White. |
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July, August |
40 x 80 |
60 x 24 |
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December, January, |
18 x 30 |
40 x 20 |
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July, August, |
30 x 18 |
60 x 24 |
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June, July |
20 x 18 |
18 x 12 |
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July, August, |
24 x 24 |
July, August |
36 x 20 |
White. |
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July, August, |
30 x 24 |
32 x 24 |
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June, July |
72-96 x 24 |
36 x 16 |
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June, July |
72-96 x 24 |
40 x 16 |
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June, July |
72-96 x 24 |
July, August, September, October |
48 x 24 |
White. |
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June, July |
72-96 x 24 |
24 x 16 |
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June, July |
72-96 x 24 |
20-40 x 4-20 |
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June, July |
72 x 24 |
28 x 24 |
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June, July, |
4 x 20 |
July, August, September |
72 x 60 |
Pinkish-Lavender |
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June, July, |
16 x 12 |
60-100 x 40-60 |
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July |
24 x 230 |
20-40 x 20-40 |
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June, July, |
36 x 24 |
August, September, October |
24-40 x 24-40 |
Pale Pink. |
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August, September, |
36 x 24 |
40-60 x 20-40 |
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Pink - July, August or |
24 x 16 |
60 x 24 |
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July, August |
36 x 18 |
July, August, September |
60 x 24 |
Cream. |
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July, August |
25 x 16 |
August, September |
24 x 24 |
Yellowish-Brown. |
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May, June |
16 x 18 |
July, August, September |
60 x 18-24 |
Pink. |
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May, June |
30 x 12 |
September, October |
12-36 x 12-36 |
White. |
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June, July, August, September, October |
36 x 12 |
July, August, September, October |
4-20 x 4-20 |
Red and White. |
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July, August, |
28 x 16 |
September, October |
52 x 24 |
Mauve-Pink. |
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August, September, |
12 x 12 |
September, October |
60 x 16-24 |
Lilac-Blue. |
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July |
30 x 18 |
August, September |
12-18 x 8-12 |
Purple-Pink. |
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August, September |
8-12 x 10 |
45 x 78 |
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June |
20-24 x 12 |
September, October |
48 x 36 |
Purple-Red. |
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July |
24 x 18 |
August, September, October, November |
48-60 x 24 |
Pale Violet. |
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July, August |
39 x 24 |
24 x 16 |
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August, September |
48 x 24 |
B |
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June, July |
18-24 x 18 (45-60 x 45) |
40-60 x 20-40 |
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July, August |
24 x 18 |
C |
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July, August |
8-18 x 12 |
60 x 24 |
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June, July |
24 x 18 |
48 x 20 |
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B |
24-36 x 18-30 |
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April, May |
12-18 x 24 |
24 x 12 |
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April, May |
12-18 x 18 (30-45 x 45) |
June, July |
60-100 x 40-60 |
White. |
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June, July, August, |
24 x 18 |
20-40 x 4-20 |
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C |
24 x 24 |
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April |
9 x 12 |
August, September, October |
35 x 23 |
Opening Orange fades to Pink. |
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June, July, |
2 x 12 |
36 x 18 |
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June, July, |
36-48 x 24 |
June, July, August, September |
60 x 48 |
Purple. |
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June, July, |
24 x 24 |
D |
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July, August, September, |
36 x 24 |
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 |
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 |
40 x 18 |
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May, June |
18 x 30 |
28 x 16 |
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May, June |
24-36 x 20 |
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) |
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 |
August, September, October |
60-100 x 20-40 |
Purplish-Pink. |
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June, July |
32 x 18 |
24 x 20 |
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June, July |
12 x 12 |
F |
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July, August, |
4 x 12 |
60-100 x 20-40 |
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July, August |
60 x 72 |
July, August |
72 x 18 |
Sulphur-Yellow. |
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H |
60 x 20 |
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September, October, |
60 x 18 |
G |
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August |
48 x 30 |
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 |
36 x 36 |
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K |
Geranium 'Rozanne' |
24 x 16 |
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September, October |
24 x 18 |
24 x 18 |
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July, August |
36 x 24 |
24 x 20 |
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September, October |
30 x 18 |
H |
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L |
July, August, September |
72 x 24 |
Yellow. |
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May, June, |
24 x 12 |
June, July, August |
36 x 24 |
Brick Orange Red. |
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April, May, |
12 x 18 |
38-51 x 16 |
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August, September, |
48 x 36 |
20-40 x 4-20 |
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June, July, |
3 x 6 |
72 x 24 |
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June, July |
12 x 12 |
20-40 x 4-20 |
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June, July, August, |
36 x 12 |
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 |
80 x 48 |
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May, June |
12 x 18 |
80 x 18 |
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July, August |
36 x 24 |
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 |
32 x 40 |
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P |
18 x 12 |
Cream. |
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June, July |
36 x 36 |
26 x 20 |
Pale Pink. |
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May, June |
36 x 36 |
I |
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June, July |
30 x 30 |
72 x 36 |
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May, June |
16 x 16 |
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 |
August, September, October, November |
60 x 40 |
White. |
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May, June, |
36 x 24 |
36 x 36 |
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May |
4-8 x 8 |
48 x 48 |
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S |
30 x 18 |
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September |
18 x 18 |
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 |
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 |