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Warty Panicgrass

Panicum verrucosum

Last reviewed: October 2026

Warty Panicgrass (Panicum verrucosum)
Photo: Robert H. Mohlenbrock. USDA NRCS. 1995. Northeast wetland flora: Field office guide to plant species. Northeast National Technical Center, Chester. Courtesy of USDA NRCS Wetland Science Institute. / Wikimedia Commons (Public domain)

Toxicity unknown

Warty Panicgrass (Panicum verrucosum) 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

full sun

Water

high

Size

12"–60" H × 6"–18" W

Bloom

Jun, Jul, Aug

Native to

AL, AR, CT, DE and 23 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 460 programs across 44 states, each with a link to the provider and the date we last checked it.

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Browse plants for this ecoregion

PiedmontNortheastern Coastal ZoneMiddle Atlantic Coastal PlainNorthern PiedmontSoutheastern PlainsBlue RidgeRidge and ValleyEastern Temperate ForestsInterior PlateauMississippi Valley Loess PlainsSouthern Coastal PlainAtlantic Coastal Pine Barrens

Warty Panicgrass is a tall native annual grass that can reach up to 5 feet in height during the growing season. It produces delicate seed heads from summer through early fall and requires consistent moisture to thrive. As an annual, it completes its life cycle in one year and will need to reseed naturally or be replanted.

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In an HOA neighborhood

Warty Panicgrass is an HOA-friendly choice in the right placement. Maintenance level: moderate. Tidiness: 2 out of 5.

Works well in: mid zone.

  • Requires seasonal replanting
  • May have messy dieback

Wildlife value

This grass produces seeds that feed native birds and small wildlife. The dense growth provides nesting habitat and cover for various species during the growing season.

Common questions

How much sun does Warty Panicgrass need?
Warty Panicgrass grows best in full sun conditions.
When does Warty Panicgrass bloom?
Warty Panicgrass blooms in June, July, and August.
Where is Warty Panicgrass native?
Warty Panicgrass (Panicum verrucosum) is native to AL, AR, CT, DE and 23 more states, per the World Checklist of Vascular Plants (Kew).
Is Warty Panicgrass HOA-friendly?
Warty Panicgrass is generally an HOA-friendly choice in the right placement, with moderate maintenance.

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.

See all plant problem guides

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