Best planted in spring, the growth habit of Japanese sedge is dense, clumping, and mounding.

Inconspicuous brownfloweringspikes emerge on the plant in mid to late spring.

Mass plantings of Japanese sedge will attract a slew of pollinators to your yard, including butterflies and bees.

Japanese sedge plant with thin green and white blades closeup

The Spruce / K. Dave

Additionally, issues with pests or diseases are fairly rare.

Once the plant is established in your landscape, it will be moderatelydrought-tolerant.

That said, they tolerate a wide range of temperatures and have no special humidity requirements.

Japanese sedge plant with thin green and white blades stacked on each other

The Spruce / K. Dave

They include:

Pruning Japanese Sedge

It’s not necessary topruneyour Japanese sedge throughout its growing season.

Remove any debris from the area around the plant and mulch over the trimmed foliage if desired.

Propagating Japanese Sedge

Division is the recommended means of propagation for Japanese sedge.

Japanese sedge with green and white blades

The Spruce / K. Dave

Good drainage holes are essential.

Fill the container with a good-quality potting mix.

Sedge in containers should be protected in areas with extended freezing temperatures, as this can damage the roots.

Protect the container with a burlap and bubble wrap, orplace the container inside an insulation silo.

Given the right environment, Japanese sedge grass should reach its maximum size in about two years.

The plant will drop its seeds regularly.

If it is a cultivar, the offspring might now be exactly the same.

Given the right care and planted in the right location, Japanese sedge grasses can live about 10 years.

Because the plant is relatively slow growing, invasiveness tends not to be a problem.