How much sun does Hemlock Panic Grass need?

Hemlock Panic Grass grows best in part sun conditions.

When does Hemlock Panic Grass bloom?

Hemlock Panic Grass blooms in June, July, and August.

Where is Hemlock Panic Grass native?

Hemlock Panic Grass (Dichanthelium columbianum) is native to CT, DE, IA, IL and 16 more states, per vouchered herbarium specimen records and regional native plant society lists.

Is Hemlock Panic Grass HOA-friendly?

Hemlock Panic Grass is generally an HOA-friendly choice in the right placement, with low maintenance.

Hemlock Panic Grass

Name: Pollinator Patch
Author: Pollinator Patch

Dichanthelium columbianum

Last reviewed: June 2026

Toxicity unknown

Hemlock Panic Grass (Dichanthelium columbianum) 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 sun

Water

medium

Size

12"–36" H × 6"–18" W

Bloom

Jun, Jul, Aug

Native to

CT, DE, IA, IL and 16 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 437 programs across 44 states, each with a link to the provider and the date we last checked it.

Find rebates in your area

Browse plants for this ecoregion

Western Corn Belt Plains Northern Forests Northern Lakes and Forests North Central Hardwood Forests Driftless Area Central Corn Belt Plains Southern Michigan/Northern Indiana Drift Plains Huron/Erie Lake Plains Northeastern Highlands Northeastern Coastal Zone Middle Atlantic Coastal Plain Northern Piedmont Southeastern Plains Blue Ridge Ridge and Valley Central Appalachians Eastern Great Lakes Lowlands Atlantic Coastal Pine Barrens

Dichanthelium columbianum is a grass that forms neat clumps with fine-textured foliage. It produces delicate seed heads during summer months and maintains a relatively compact, orderly appearance throughout the growing season.

In an HOA neighborhood

Hemlock Panic Grass is an HOA-friendly choice. Maintenance level: low. Tidiness: 4 out of 5.

Works well in: front yard, foundation, street edge, mid zone.

Wildlife value

This native grass provides seeds for songbirds and small mammals. The foliage offers nesting material and shelter for beneficial insects.

Common questions

How much sun does Hemlock Panic Grass need?: Hemlock Panic Grass grows best in part sun conditions.
When does Hemlock Panic Grass bloom?: Hemlock Panic Grass blooms in June, July, and August.
Where is Hemlock Panic Grass native?: Hemlock Panic Grass (Dichanthelium columbianum) is native to CT, DE, IA, IL and 16 more states, per vouchered herbarium specimen records and regional native plant society lists.
Is Hemlock Panic Grass HOA-friendly?: Hemlock Panic Grass is generally an HOA-friendly choice in the right placement, with low maintenance.

Native range data from vouchered herbarium specimen records and regional native plant society lists. Pollinator and host plant associations compiled from GBIF, iNaturalist, and published ecological literature.

Ready to grow Hemlock Panic Grass? Add it to your garden in Pollinator Patch to track it and get season-by-season care guidance.

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