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Annual Biennial

Smyrnium olusatrum
  • RHS Plants for pollinators

alexanders

A vigorous, semi-evergreen biennial of the umbellifer family, growing to 75-120cm high with a solid stem which becomes hollow and grooved with age. The leaves are bluntly toothed, the flat segments ternately divided. The plant bears greenish-yellow flowers in umbrella-like clusters with a pungent, myrrh-like scent

Other common names
alisanders
black lovage
see moreblack pot-herb
horse parsley
stanmarch
Thanet celery

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Size
Ultimate height
1–1.5 metres
Time to ultimate height
1–2 years
Ultimate spread
0.1–0.5 metres
Growing conditions
Sand
Clay
Chalk
Loam
Moisture
Moist but well–drained, Well–drained
pH
Neutral, Acid, Alkaline
Colour & scent
StemFlowerFoliageFruit
Spring Green
Summer Yellow Green Green
Autumn Green
Winter Green
Position
  • Full sun
Aspect

South–facing or West–facing or East–facing

Exposure
Sheltered
Hardiness
H6
Botanical details
Family
Apiaceae
Native to the UK
Yes
Foliage
Deciduous
Habit
Clump forming
Genus

Smyrnium are erect, branching biennials with broadly oblong, divided lower leaves and rounded upper leaves. In late spring and early summer they produce branched umbels of small, greenish-yellow flowers

Name status

Correct

Plant range
Mediterranean

How to grow

Cultivation

Best grown in a free draining soil in full sun. Grows well in coastal areas

Propagation

Propagate by seed. See sowing vegetable seeds

Suggested planting locations and garden types
  • Coastal
  • Cottage and informal garden
  • Wildlife gardens
  • Flower borders and beds
Pruning

Not required

Pests

Generally pest-free

Diseases

Generally disease-free

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