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Gray's Sedge, Common Bur Sedge seed head close up
Carex grayi

Common Bur Sedge

Plants

50 Plug Tray Out of Stock

Description

Common Bur Sedge (Carex grayi), also called Gray’s Sedge or Mace Sedge, is a native sedge named for its unique spiky seed heads that resemble small medieval maces. It forms clumps about 2–3 feet tall and stands out for its bold, star-like seed structures that appear in mid-summer.

This species grows best in partial shade and moist soils but is more adaptable than many sedges. It can handle full sun if moisture is consistent and tolerates occasional flooding. You’ll find it naturally along woodland edges, streambanks, and in floodplain areas.

Common Bur Sedge spreads slowly by short rhizomes to form loose colonies. It works well in rain gardens, woodland plantings, and naturalized landscapes where moisture is available. The seed heads add strong texture and are often used in fresh or dried arrangements.

While sedges are wind-pollinated and don’t attract many insects, they play an important role for wildlife. The foliage supports some butterfly larvae, and the seeds are eaten by birds, small mammals, and other wildlife.

Seed Details

Weight 15 lbs
Dimensions 22 × 12 × 11 in

Range Map

Carex grayi native range map

Details

SociabilityColonies, Rhizomes
Sun RequirementsFull Sun, Partial Sun
Soil MoistureMesic, Wet-Mesic, Wet
Height2-3'
USDA Zones4 - 9
Bloom ColorGreen
Bloom PeriodMay, June, July, August
Plant Spacing1-2'

Seeds & Seed Mixes:

Seeds and seed mixes ship nationwide, year-round, typically within 3–5 business days. If you would like to postpone a seed mix shipment until fall, please note this at checkout.

Live Plants:

Live plants are available year-round while inventory lasts and ship to all states except California, Arizona, Oregon, Washington, Nevada, Alaska, and Hawaii. After your order is placed, we’ll contact you to coordinate a spring shipping window, as many plants are overwintered and ship once dormancy breaks.

Estimated shipping for 2026 plant orders begins in mid-April, weather permitting.

If you’re looking to secure plants in advance or need larger quantities for a project, we offer contract growing options. Contact us to discuss your needs and request a quote. Additional species not listed online may also be available through contract grow.

Live Stakes:

Live stakes are available by request only and must be ordered by submitting a contact form. Ordering is open seasonally from November 1 through February 28. A minimum of 100 stakes per order is required, with at least 25 stakes per species.

Live stakes ship only to the following states: Missouri, Minnesota, South Dakota, North Dakota, Nebraska, Kansas, Oklahoma, Arkansas, Tennessee, Kentucky, Illinois, Indiana, Ohio, Michigan, and Iowa.

PLS stands for Pure Live Seed, an industry-standard measure of seed quality. It reflects the portion of seed in a batch that is viable and capable of germinating.

What this means for you: when you purchase 1 lb. of PLS seed, the physical weight of the seed you receive will be slightly more than 1 lb. That’s because we account for non-viable seed and natural inert material upfront, so you receive a full pound of live, plantable seed.

Many companies sell bulk seed by total weight, which can include filler and non-viable seed. By pricing based on PLS, we make sure you’re getting exactly what you paid for—high-quality native seed with more predictable, successful germination.

Want to dive deeper? Check out our in-depth article on what PLS is and why it matters.