About
Carex oshimensis is a robust, evergreen sedge that forms dense clumps, reaching heights of 30 to 40 cm. Its foliage consists of fine-textured, glossy green leaves. In mid to late spring, it produces subtle brown flower spikes that rise up to 15 cm above the foliage, blending seamlessly with the plant's overall appearance.
About the genus
Carex encompasses both deciduous and evergreen species, characterized by their rhizomatous or tufted growth habits. These perennials feature triangular stems topped with linear or strap-like foliage, and they produce spikes that can be either short or elongated, adorned with small green or brown flowers.
Growing conditions
- Sunlight
- Full sun, Partial shade
- Soil type
- Chalk, Clay, Loam, Sand
- Soil pH
- Acid, Alkaline, Neutral
- Soil moisture
- Moist but well-drained, Well-drained
- Aspect
- South-facing, West-facing, East-facing
- Exposure
- Exposed, Sheltered
- UK hardiness
- H7
Plant details
- Plant type
- Grass Like
- Habit
- Clump forming, Tufted
- Foliage
- Evergreen
- Height
- 0.1-0.5 metres
- Spread
- 0.1-0.5 metres
- Time to full height
- 2-5 years
- Suggested uses
- City and courtyard gardens, Coastal, Cottage and informal garden, Gravel garden, Patio and container plants
- Native to
- Japan
Care notes
- Cultivation
- Grow in fertile moist but well-drained soil in full sun or part shade. See ornamental grasses cultivation
- Pruning
- Cut out any dead leaves on evergreen species in summer
- Propagation
- Propagate by seed in early spring or by division in mid spring to early summer
- Pest resistance
- May be susceptible to aphids
- Disease resistance
- Generally disease-free