species
Forsythia × intermedia
Forsythia
Scale drawing from this record, beside a 1.7 m figure.
Forsythia × intermedia belongs to the family Oleaceae, also known as Forsythia, introduced to the UK. It reaches 2.5 m tall and 2.5 m across in about 10 years. It grows in full sun or part shade, on loam, clay or chalk soil, where the ground is acid, neutral or alkaline and in well drained or moist conditions, and suits average positions. It flowers from March to April. Its RHS hardiness rating is H6 (hardy, very cold winter): −20 to −15°C.
Assembled from the attributes recorded below.
What this plant needs
- Size at maturity
- 2.5 m tall × 2.5 m across, after about 10 years
- Hardiness
- H6 (RHS)
- Aspect
- Full sun, Part shade
- Soil
- Loam, Clay, Chalk
- Acidity
- Acid, Neutral, Alkaline
- Moisture
- Well drained, Moist
- Exposure
- Average
- In the UK
- Introduced
When it flowers
- Jan
- Feb
- Mar
- Apr
- May
- Jun
- Jul
- Aug
- Sep
- Oct
- Nov
- Dec
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