Laserpitium siler
laserwort
A hardy, clump-forming, architectural deciduous perennial with deeply divided blue-green foliage and large umbels of pink to white flowers which appear in early summer. Good for pollinating insects. Seed heads can be left over winter
Size
Ultimate height
0.5–1 metresTime to ultimate height
1–2 yearsUltimate spread
0.1–0.5 metresGrowing conditions
Moisture
Well–drainedpH
Acid, Alkaline, NeutralColour & scent
| Stem | Flower | Foliage | Fruit | |
| Spring | Blue Green | |||
|---|---|---|---|---|
| Summer | Pink White | Blue Green | ||
| Autumn | Blue Green | |||
| Winter |
Position
- Full sun
Aspect
South–facing or West–facing
Exposure
Exposed or Sheltered Hardiness
H7Botanical details
- Family
- Apiaceae
- Native to GB / Ireland
- No
- Foliage
- Deciduous
- Habit
- Clump forming, Columnar upright
- Name status
Correct
- Plant range
- S & SC Europe
How to grow
Cultivation
Grow in well-drained soil, gravel or rock gardens in full sun in a dry location
Propagation
Propagate by fresh seed in autumn, or in a damp vermiculite mixture under glass with bottom heat for 3 weeks, then in cooler conditions for around 8 weeks prior to sowing
Suggested planting locations and garden types
- Architectural
- Cottage and informal garden
- Gravel garden
Pruning
No pruning required. Deadhead regularly and cut back in autumn
Pests
Generally pest-free
Diseases
Generally disease-free
Get involved
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