Species Glomerate Sedge
lime-brown spikelet with lime foliage and stem

Glomerate Sedge

Carex aggregata

Also Known As - Smooth Clustered Sedge
Glomerate Sedge (Carex aggregata) is a small perennial plant native to North America. Growing to a height of 4-5 feet, it has a light green hue and ribbed leaves. This sedge forms dense, clump-like growths in moist or wet areas such as swamps, riverbanks, and wet meadows. In summer, it produces terminal spikes of creamy flowers. The glossy, dark brown fruits mature in late summer and provide food for wildlife. It is easy to grow and requires low maintenance, making it a great addition to native gardens.

Watering:

Average

Propagation:

Division,Cutting,Seed Propagation,Rhizome Propagation

Hardiness Zone:

Flowers:

Green/Brown Flowers

Sun:

Sun, Partial Shade

Soil:

Loam

Leaf:

Yes

Leaf Color:

green

Growth Rate:

Low

Drought Tolerant:

Yes

Salt Tolerant:

Yes

Care Level:

Medium

watering

Glomerate Sedge should be watered often enough to keep the soil moist, but not so much that it becomes soggy. Water in the morning or evening when temperatures are cooler to reduce the loss of moisture due to evaporation. Aim for at least 1 inch of water per week during the growing season. Water more often during periods of drought. If the soil feels dry or plants show signs of wilting, an additional inch of water is recommended. Reduce watering in the winter when the plant goes dormant.

sunlight

Glomerate Sedge (Carex aggregata) thrive best when exposed to direct sunlight for at least 6 hours each day. They can also handle partial sun, or simply bright, filtered light. They should receive the most sunlight in the morning, as the sunlight is stronger and the temperatures are cooler. If sunlight is in short supply, Glomerate Sedge may benefit from a few hours of midday sunshine. Avoid exposing Glomerate Sedge to direct afternoon sunlight, as this can burn the leaves.

pruning

Glomerate Sedge should be pruned back once a year in late winter or early spring, after the last frost. Pruning should be done to encourage new growth and to shape and form the plant. Remove any dead or diseased stems, as well as any crossing and crowded branches. Trim back the plant by about 1-third of its overall height. If the plant is overly dense, you may need to do some light thinning. This will help keep the plant healthy and encourage new growth.

Season

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

Carex aggregata typically starts flowering in May.