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Alexanders

Smyrnium olusatrum
Edible value5Medicinal value1Other uses3
biennial0.8×1.5 mzone 5–9full shade

Will it grow where I live?

Alexanders is hardy to zone 5 – that covers all of Central Europe and the British Isles, and every USDA zone from 5 upwards.

Or check it for your location right here:

Winter hardiness by USDA zone, summer warmth by heat sum – the same values the app and the plant finder use.

Profile

Family
Apiaceae
Habit
biennial
Height
0.8 m
Spread
1.5 m
Growth
medium
Lifespan
2 years
First yield
after 2 years
Hardiness
zone 5–9
Shade tolerance
full shade
Soil
Sand, Silt, Loam
Soil moisture
semi-dry – very moist
pH
6 – 8

Uses

Edible5 of 10
Medicinal1 of 10
Other uses3 of 10

Frequently asked questions

Alexanders: how big does it get?

Alexanders (Smyrnium olusatrum) grows as a biennial and reaches roughly 0.8 m in height when mature, with a spread of about 1.5 m. Growth is medium.

Alexanders: what site does it need?

Alexanders tolerates full shade. Suitable soils are Sand, Silt, Loam. Soil moisture should be in the range semi-dry – very moist. The pH may lie between 6 and 8.

Alexanders: is it hardy?

Alexanders is listed as hardy in zone 5–9 and survives normal winters outdoors there.

Alexanders: will it grow in Central Europe?

Alexanders is hardy to zone 5 – that covers all of Central Europe and the British Isles, and every USDA zone from 5 upwards.

Alexanders: is it poisonous?

No toxicity is recorded for Alexanders. With wild plants, never rely on a database alone — only on a confident identification.

Alexanders: what is it used for?

Rated on a scale up to 10: Edible 5/10, Medicinal 1/10, Other uses 3/10.

Community experience

No first-hand reports for this plant yet.

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