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Carex tribuloides (Blunt Broom Sedge)

Carex tribuloides (Blunt Broom Sedge)

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Regular price $ 6.67
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$30 minimum per species for seed.

Each species requires a minimum of $30 of seed to proceed with checkout.

Pure Live Seed

Seed is provided in Pure Live Seed (PLS) unless otherwise stated.

Pure Live Seed (PLS) expresses the viable seed content of a seed lot using its purity and germination or viability test results. It helps you compare seed lots and calculate how much bulk seed is needed to meet a specified PLS planting rate.

PLS weight and bag weight

PLS weight is not the same as the total weight of seed in a bag. For example, a lot with 80% purity and 75% viability contains 60% PLS: 80 × 75 ÷ 100 = 60. Supplying 10 lb PLS from that lot requires about 16.67 lb of bulk seed.

Use the current seed test and the stated basis of the mix specification. Germination calculations may include applicable hard or dormant seed. Seed-count estimates also require the number of seeds per pound; PLS alone does not provide a seed count.

What to check when buying a mix

Check whether each rate is stated in PLS pounds, bulk pounds, or a combination. A mix with both bases should not be described as having an all-PLS total.

PLS does not remove weed seeds or guarantee establishment. Review the seed label and analysis for weed content, and match site preparation, planting conditions and follow-up management to your project.

Sources: USDA NRCS, Understanding Pure Live Seed and The Importance of Seed Quality for Natural Resource Conservation.

Weight Conversions lbs. to oz.

0.01 pounds = 0.16 ounces

  • 0.1 pounds = 1.6 ounces
  • 0.25 pounds  = 4 ounces
  • 0.5 pounds = 8 ounces
  • 0.75 pounds = 12 ounces
  • 1.00 pounds = 16 ounces

Blunt broom sedge makes loose tufts of leafy stems and flowers during summer. Moisture is the main site requirement across the varied soil textures it tolerates.

For Carex tribuloides, choose full sun to light shade and wet to moist soil. Recorded habitats include floodplain and bottomland woods; Woodland vernal-pool margins; Swamps; Moist meadows; Wet prairies; Marshes; Peaty bogs; Gravelly seeps. Reported height: erect to ascending stems about 1½–3 ft long.

Growth habit: upright to ascending stems; often forms small colonies. Allow space for this growth between neighboring plants over several seasons, rather than spacing only for the size of a young plant.

Plant specifications

Key growing facts

Sunlight Full sun to light shade
Soil moisture Wet to moist
Height Erect to ascending stems about 1½–3 ft long
Bloom season Usually early to mid-summer; occasional later bloom
Show / hide ▾Growing & planting details
Growth habit Upright to ascending stems; often forms small colonies
Root form Fibrous roots; Rhizomes
Soil pH 4.8–7.0
Drought tolerance Low
Salt tolerance None

Plant identification & seed reference

Botanical name Carex tribuloides
Other common names awl-fruited oval sedge
Seed germination USDA lists cold stratification as not required; seed-lot response may vary.
Plant family Cyperaceae

Plant characteristics

Carex tribuloides are locally common in a variety of wetland types and are adaptive to many types of soils as well. Furthermore, it can be found in disturbed and high-quality habitats. 

  • Flower Time July
  • Bloom Color Green
Show / hide ▾Plant communities & associatesNo verified list yet

A species-level list has not yet been verified for this listing.

Show / hide ▾Native range & C-value

State nativity describes a broad range. Use the Chicago-region assessment for local context; a state listing does not establish county nativity.

Wetland indicator — NWPL 2022 Midwest OBL
C-value — Chicago region, Flora 2017 7
Chicago-region native — Flora 2017 Yes
Native range — U.S. states Alabama; Arkansas; Connecticut; Delaware; Florida; Georgia; Illinois; Indiana; Iowa; Kansas; Kentucky; Louisiana; Maine; Maryland; Massachusetts; Michigan; Minnesota; Mississippi; Missouri; Nebraska; New Hampshire; New Jersey; New York; North Carolina; Ohio; Oklahoma; Pennsylvania; Rhode Island; South Carolina; Tennessee; Texas; Vermont; Virginia; West Virginia; Wisconsin
County nativity Not yet verified; occurrence records do not establish nativity.
Show / hide ▾Pollinators & wildlifeNo verified list yet

No additional named relationships have been verified for this listing.

Show / hide ▾Frequently asked questions

What are the ideal growing conditions for Blunt Broom Sedge?
Light: Full sun to light shade. Soil moisture: Wet to moist.

How do I germinate and establish Blunt Broom Sedge from seed?
USDA lists cold stratification as not required; seed-lot response may vary.

Is Blunt Broom Sedge deer and herbivore resistant?
Species-specific deer resistance has not been verified here. Even plants described as resistant may be browsed. Use physical protection where deer damage is a concern.

When should I expect Blunt Broom Sedge to bloom?
Typical flowering period: Usually early to mid-summer; occasional later bloom. Timing varies with location and weather.

Show / hide ▾Sources & ecological notes

Native range & ecological ratings: Flora of the Chicago Region (2017), via Universal FQA; USACE Chicago FQA (2017); Kew WCVP / Plants of the World Online; USACE National Wetland Plant List.

Growing conditions & other references: Illinois Wildflowers, John Hilty; USDA NRCS PLANTS.

Native range does not identify the origin of the seed or plants offered. Community and wildlife records apply to the locations and conditions described.

Research notes & credits

USACE/ERDC fqadata — Chicago Region FQA 2017. Herman, B., Sliwinski, R. & Whitaker, S. (2017), Chicago Region FQA Calculator; distributed by USACE/ERDC in fqadata under CC0. Values may differ from Flora of the Chicago Region (2017). CC0 dedication. Retained for comparison; the displayed C-value follows Flora database 80.

Range data: World Checklist of Vascular Plants, Royal Botanic Gardens, Kew; 4 June 2026 release, accessed 7 September 2026. © The Trustees of the Royal Botanic Gardens, Kew. CC BY 3.0; selected and reformatted. Kew cannot warrant the quality or accuracy of these data. This use has no Kew endorsement.

Flora rating attribution: Kenneth Johnson (2018), Flora of the Chicago Region UFQA Database, following Gerould Wilhelm and Laura Rericha (2017), Flora of the Chicago Region: A Floristic and Ecological Synthesis. Individual rating facts are presented with original commentary; the calculator’s software license is not treated as a license for the underlying Flora publication.

Growing guidance: Illinois Extension — Keeping deer out of the yard and garden. Selected facts in original wording. General deer advice is not a species resistance rating.

Seed Shipping & Care

There is a minimum order requirement of $30 for each seed species. Seed ships all year and typically ships within a week of an order being placed.

We have attempted to put together some basic information regarding native seed installation, establishment, and maintenance.  We hope you find it helpful.  If you need further assistance on native seed establishment, please schedule a free consolation call here.

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Ecosystem Restoration Considerations

Native Seed Establishment Best Management Practices

Native Seed Stratification Best Management Practices

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Whether you're fighting severe erosion, replacing invasive species, designing a pollinator haven, or seeding large acreage, choosing the wrong species wastes time and money. Talk 1-on-1 with a restoration ecologist to map out the exact species, plug counts, or seed mixes for your soil and goals. Book a consultation and get all or a portion credited directly back to your order.

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