Carex oshimensis

Japanese sedge

Eventual height & spread

Carex oshimensis

Japanese sedge

  • 9cm pot
  • £12.99
  • sold out
Delivery options
  • Standard £5.99
  • Position: full sun or partial shade
  • Soil: moist but freely draining soil
  • Rate of growth: average
  • Flowering period: April to June
  • Hardiness: frost hardy (may need winter protection)


This elegant, evergreen sedge forms dense, arching clumps of fine, glossy green foliage that add year-round structure to the garden. Carex oshimensis displays a tidy, mounded habit, making it ideal for borders, containers, or as low-maintenance ground cover.

From mid to late spring, slender stems carry subtle brown flower spikes that sit just above the leaves, adding delicate texture without dominating the foliage. Its fine-textured blades catch light beautifully, creating movement in wind or rain. Low-maintenance and durable, it requires only modest care once established.

Works well in mixed perennial beds, woodland-style plantings, or contemporary gardens, and is perfect for gardeners seeking an attractive, hardy, and versatile ornamental grass alternative.


  • Garden care:
    Plant Carex in well-drained soil, ideally enriched with organic matter, and choose a spot in full sun or light shade. Space plants to allow for their mature size and water regularly until established. Feed during the growing season and lift and divide crowded clumps in early spring to maintain vigour.

    Most evergreen and semi-evergreen Carex don’t need cutting back in the the traditional sense. Instead, in late winter or early spring, just comb through the plant with your fingers or a rake to remove any dead or tatty foliage. If the plant looks untidy or has suffered winter damage, you can lightly trim back the worst leaves, but avoid hard pruning as it can spoil the natural shape and regrowth is quite slow.