Tall Bog Sedge
Carex magellanica
Last reviewed: August 2026

Toxicity unknown
Tall Bog Sedge (Carex magellanica) is not listed by the ASPCA Animal Poison Control Center (opens in new tab) or the other sources we check, so we have no verdict for it either way. Absence from those lists is not a clearance. If your pet shows symptoms after eating any plant, call the ASPCA at (888) 426-4435.
Light
part shade
Water
high
Size
12"–36" H × 6"–12" W
Bloom
May, Jun, Jul
Native to
CO, CT, ID, ME and 11 more states
Before you buy
Your city may pay you to plant this
Cities and water utilities offer rebates for replacing lawn with native and water-wise plants. We track 452 programs across 44 states, each with a link to the provider and the date we last checked it.
Find rebates in your areaBrowse plants for this ecoregion
Tall bog sedge is a native grass-like perennial that forms upright clumps with narrow, arching leaves. It thrives in consistently moist to wet conditions and produces inconspicuous flowers in late spring and summer. This sedge works well in rain gardens, bog gardens, or naturally wet areas of the landscape.
In an HOA neighborhood
Tall Bog Sedge takes more care to keep looking intentional in a front yard. Maintenance level: moderate. Consider it for backyard or mid-zone beds rather than the street edge.
Works well in: backyard only.
- Requires consistently wet conditions that are uncommon in typical landscaping
- May appear weedy or unkempt to those unfamiliar with native sedges
- Growth form may be too informal for front yard standards
Wildlife value
While specific pollinator data is limited, sedges generally provide habitat and food for various insects and birds. The seeds may attract small birds, and the dense growth provides shelter for beneficial insects.
Common questions
- How much sun does Tall Bog Sedge need?
- Tall Bog Sedge grows best in part shade conditions.
- When does Tall Bog Sedge bloom?
- Tall Bog Sedge blooms in May, June, and July.
- Where is Tall Bog Sedge native?
- Tall Bog Sedge (Carex magellanica) is native to CO, CT, ID, ME and 11 more states, per the World Checklist of Vascular Plants (Kew).
- Is Tall Bog Sedge HOA-friendly?
- Tall Bog Sedge takes more care to look intentional in a front yard. Consider it for backyard or mid-zone beds rather than the street edge.
Native range data from the World Checklist of Vascular Plants (Kew). Pollinator and host plant associations compiled from GBIF, iNaturalist, and published ecological literature.
If something looks wrong
Common plant problems, and what to check first
These come up on almost any plant. Each guide lists the likely causes in the order they are worth ruling out, with one thing to check before you act on any of them, and links to the source it came from.
- It is dying right after planting
- Leaves turning yellow
- Wilting even though I watered it
- Brown crispy leaf tips
- Bugs on the plant
Ready to grow Tall Bog Sedge? Add it to your garden in Pollinator Patch to track it and get season-by-season care guidance.
Planning a bed around it? Start a free plan with this plant
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