species
Allium porrum
Leek
Scale drawing from this record, beside a 1.7 m figure.
Allium porrum is a biennial in the family Amaryllidaceae, also known as Leek, introduced before 1500 and long since part of the landscape. It reaches 70 cm tall and 15 cm across in about 10 years. It grows in full sun, on loam, clay or sand soil, where the ground is neutral or alkaline and in moist or well drained conditions, and suits average positions. It flowers in July. Its RHS hardiness rating is H5 (hardy, cold winter): −15 to −10°C.
Assembled from the attributes recorded below.
What this plant needs
- Size at maturity
- 70 cm tall × 15 cm across, after about 10 years
- Hardiness
- H5 (RHS)
- Lifecycle
- Biennial
- Aspect
- Full sun
- Soil
- Loam, Clay, Sand
- Acidity
- Neutral, Alkaline
- Moisture
- Moist, Well drained
- Exposure
- Average
- In the UK
- Archaeophyte (pre-1500)
When it flowers
- Jan
- Feb
- Mar
- Apr
- May
- Jun
- Jul
- Aug
- Sep
- Oct
- Nov
- Dec
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