species
Carex oshimensis
Japanese sedge
Scale drawing from this record, beside a 1.7 m figure.
Carex oshimensis belongs to the family Cyperaceae, also known as Japanese sedge, introduced to the UK. It reaches 40 cm tall and 50 cm across in about 10 years. It grows in part shade or full sun, on loam or clay soil, where the ground is acid, neutral or alkaline and in moist or well drained conditions, and suits average positions. It flowers from May to June and is evergreen. 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
- 40 cm tall × 50 cm across, after about 10 years
- Hardiness
- H6 (RHS)
- Aspect
- Part shade, Full sun
- Soil
- Loam, Clay
- Acidity
- Acid, Neutral, Alkaline
- Moisture
- Moist, Well drained
- Exposure
- Average
- In the UK
- Introduced
When it flowers
- Jan
- Feb
- Mar
- Apr
- May
- Jun
- Jul
- Aug
- Sep
- Oct
- Nov
- Dec
Evergreen — it holds its leaves through the winter.
Plan a bed with Carex oshimensis
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