Species Columbia Sedge
brown-orange cones with green-brown foliage and stems

Columbia Sedge

Carex aperta

Columbia Sedge (Carex aperta) is a small, perennial plant native to the Pacific Northwest region of the U.S. It is a rhizomatous species with lance-shaped leaves and bright yellow flowers that form thick tufts near the base of the plant. The flowers are a great food source for birds and insects, providing color to the landscape. The plant grows in full sun to part shade conditions, in wet to dry soil and is salt tolerant. It is an attractive ornamental species, often used in naturalized areas or wetlands. Its robust, low-maintenance nature make it a great choice for the home garden.

Watering:

Average

Hardiness Zone:

Flowers:

Green/Brown Flowers

Sun:

full sun,part shade

Soil:

Loam, Humus Enriched

Leaf:

Yes

Leaf Color:

green

Growth Rate:

Low

Drought Tolerant:

Yes

Salt Tolerant:

Yes

Invasive:

Yes

Care Level:

Medium

watering

Eastern Narrowleaf Sedge should be watered moderately and consistently. Water once every 3-4 days, just enough to ensure the soil is moist (not soggy) but not dry. During the hottest parts of the summer, you may need to increase the frequency of watering to once or twice a day depending on the climate and your soil. In the winter or cooler months, reduce or stop watering until late spring or early summer.

sunlight

Eastern Narrowleaf Sedge (Carex amphibola) needs about 4-5 hours of direct sunlight per day for optimum growth. This plant species prefers part shade, so direct sunlight should not be provided for more than 6-7 hours per day. Avoid direct sunlight during hotter parts of the day, such as late morning or afternoon, as this can be too intense for the plant and may damage it. Eastern Narrowleaf Sedge does best when planted in a shaded area, such as next to a wall, tree, or tall shrub. This will help provide enough sunlight while still remaining somewhat cool during the hottest parts of the day.

pruning

Eastern Narrowleaf Sedge should be pruned in late spring for optimal health and blooming. Pruning should be done by clipping off the dead or damaged leaves and stems, as well as any overgrown or crowded growth. This will aid in overall air circulation and help promote new growth. The amount of pruning should be kept to a minimum, as too much pruning can cause undue stress on the plant. For lighter, more cosmetic pruning, only the old or dead foliage should be removed, and new growth should be left as is.

Season

Fall
Winter
Spring
Summer
Sep
Oct
Nov
Dec
Jan
Feb
Mar
Apr
May
Jun
Jul
Aug
Starts Flowering

⚠️ Perenual and its members cannot be held liable for any health issues that may arise from the information provided on the website or from using any of the plants found on the site. The information provided is intended to be used as general guidelines only.