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Herbaceous Perennial

Achillea millefolium 'Sassy Summer Lemon' (Sassy Summer Series)

yarrow 'Sassy Summer Lemon'

A spreading perennial to about 90cm, with grey-green, fern-like foliage which carpets the ground before the flowers appear. Upright, branching stems are topped with large, flat clusters of bright yellow flowerheads from summer to autumn

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Ultimate height

0.5–1 metres

Time to ultimate height

2–5 years

Ultimate spread

0.1–0.5 metres

Chalk

Clay

Loam

Sand

Moisture

Well–drained, Moist but well–drained

pH

Acid, Alkaline, Neutral

	Stem	Flower	Foliage	Fruit
Spring
Summer
Autumn
Winter

Full sun

Aspect

South–facing or West–facing

Exposure

Exposed or Sheltered

Hardiness
Hardiness ratings
All ratings refer to the UK growing conditions unless otherwise stated. Minimum temperature ranges (in degrees C) are shown in brackets
H1a: under glass all year (>15C)
H1b: can be grown outside in the summer (10 - 15)
H1c: can be grown outside in the summer (5 - 10)
H2: tolerant of low temperatures, but not surviving being frozen (1 to 5)
H3: hardy in coastal and relatively mild parts of the UK (-5 to 1)
H4: hardy through most of the UK (-10 to -5)
H5: hardy in most places throughout the UK even in severe winters (-15 to -10)
H6: hardy in all of UK and northern Europe (-20 to -15)
H7: hardy in the severest European continental climates (< -20)

Botanical details

Family: Asteraceae
Native to GB / Ireland: No
Foliage: Deciduous
Habit: Clump forming
Genus: Achillea can be mat-forming or upright perennials, mostly herbaceous, with sometimes aromatic, pinnately divided or simple and toothed leaves and flattened clusters of small, daisy-like flower-heads
Name status: Unresolved

How to grow

Cultivation

Grow in an open, sunny position in well-drained soil

Propagation

Propagate by division in spring

Suggested planting locations and garden types

City and courtyard gardens
Cottage and informal garden
Prairie planting
Wildlife gardens
Cut flowers
Flower borders and beds

Pruning

Deadhead regularly to prolong flowering

Pests

May be susceptible to aphids

Diseases

May be susceptible to powdery mildews

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