RHS award of garden merit Good for cutting
Seed no. 344B
Tanacetum macrophyllum
Giant Milfoil
£2.35
In stock · approx. 328 seeds per packet
Free UK delivery over £40 · £2.75 below that · despatched within two working days
Year at a glance
Sow
J
F
M
A
M
J
J
A
S
O
N
D
Flowers
J
F
M
A
M
J
J
A
S
O
N
D
Germination
Sow indoors. Surface sow onto moist well-drained seed compost, press seeds into soil but do not cover. Ideal temp. 18-21°C. Germination takes 10-18 days. Transplant seedlings when large enough to handle to 8cm pots. Acclimatise and plant out after danger of frost has passed with 120cm spacing. Can be sown directly from April into well prepared soil that has been raked to a fine tilth.
Growing
Pinch out growing tips and first set of leaves in May to create a bushier plant.
Cultivation
Deadhead or cut flowers to extend flowering window. Cut plant to ground level after first frosts. Divide every 3-4 years to maintain plant vigour. Divide as soon a growth begins in spring.
| Genus | Tanacetum |
|---|---|
| Species | macrophyllum |
| Family | Compositae/Asteraceae |
| Common name | Giant Milfoil |
| Seed number | 344B |
| Hardiness | Hardy |
| Life cycle | Perennial |
| Colour | Yellow/Orange |
| Position | Full sun |
| Soil type | Clay, Chalky, Sandy, Loam |
| Soil acidity | Alkaline, Neutral, Acid |
| Moisture | Well drained |
| Height | 0.3m |
| Sow | Mar, Apr |
| Flowers | Apr, May |
| Seeds per packet | 328 |
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