species
Clethra alnifolia
Sweet pepperbush
Scale drawing from this record, beside a 1.7 m figure.
Clethra alnifolia belongs to the family Clethraceae, also known as Sweet pepperbush, introduced to the UK. It reaches 2 m tall and 2 m across in about 10 years. It grows in part shade or full sun, on peat or loam soil, where the ground is acid and in moist or poorly drained conditions, and suits average positions. It flowers in August. 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 m tall × 2 m across, after about 10 years
- Hardiness
- H6 (RHS)
- Aspect
- Part shade, Full sun
- Soil
- Peat, Loam
- Acidity
- Acid
- Moisture
- Moist, Poorly drained
- 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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