How much sun does Clammy Hedgehyssop need?

Clammy Hedgehyssop grows best in part sun conditions.

When does Clammy Hedgehyssop bloom?

Clammy Hedgehyssop blooms in May, June, July, August, and September.

Where is Clammy Hedgehyssop native?

Clammy Hedgehyssop (Gratiola neglecta) is native to AL, AR, AZ, CA and 43 more states, per vouchered herbarium specimen records and regional native plant society lists.

What pollinators does Clammy Hedgehyssop attract?

Clammy Hedgehyssop draws bees and beetles.

Is Clammy Hedgehyssop HOA-friendly?

Clammy Hedgehyssop takes more care to look intentional in a front yard. Consider it for backyard or mid-zone beds rather than the street edge.

Clammy Hedgehyssop

Name: Pollinator Patch
Author: Pollinator Patch

Gratiola neglecta

Last reviewed: August 2026

Toxicity unknown

Clammy Hedgehyssop (Gratiola neglecta) 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

high

Size

4"–12" H × 2"–6" W

Bloom

May, Jun, Jul, Aug, Sep

Native to

AL, AR, AZ, CA and 43 more states

Pollinators

bees, beetles

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 445 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

Puget Lowland Marine West Coast Forest Northwestern Forested Mountains Sierra Nevada North American Deserts Central Basin and Range Southern Rockies Arizona/New Mexico Mountains High Plains Southwestern Tablelands Edwards Plateau Texas Blackland Prairies East Central Texas Plains South Central Plains Eastern Temperate Forests Ozark Highlands Central Irregular Plains Northwestern Great Plains Great Plains Piedmont Northern Glaciated Plains Western Corn Belt Plains Northern Forests Northern Lakes and Forests North Central Hardwood Forests Driftless Area Southeastern Wisconsin Till Plains Central Corn Belt Plains Eastern Corn Belt Plains Southern Michigan/Northern Indiana Drift Plains Northeastern Highlands Northeastern Coastal Zone Northern Allegheny Plateau Erie Drift Plain Middle Atlantic Coastal Plain Northern Piedmont Southeastern Plains Blue Ridge Ridge and Valley Central Appalachians Western Allegheny Plateau Interior Plateau Interior River Valleys and Hills Mississippi Alluvial Plain Mississippi Valley Loess Plains Eastern Great Lakes Lowlands Atlantic Coastal Pine Barrens

Clammy hedgehyssop is a small native annual that thrives in moist to wet soils and partial sun conditions. This compact plant produces tiny white or pale blue flowers throughout the growing season from late spring through early fall. It naturally occurs in wetlands, pond edges, and other consistently moist areas.

In an HOA neighborhood

Clammy Hedgehyssop 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.

Very small stature can appear weedy
Annual nature means gaps in coverage
Requires consistently moist soil which may look unkempt

Wildlife value

The small flowers attract native bees and beetles during its extended blooming period from May through September. As a native wetland plant, it provides habitat value in moisture-retentive garden areas.

Common questions

How much sun does Clammy Hedgehyssop need?: Clammy Hedgehyssop grows best in part sun conditions.
When does Clammy Hedgehyssop bloom?: Clammy Hedgehyssop blooms in May, June, July, August, and September.
Where is Clammy Hedgehyssop native?: Clammy Hedgehyssop (Gratiola neglecta) is native to AL, AR, AZ, CA and 43 more states, per vouchered herbarium specimen records and regional native plant society lists.
What pollinators does Clammy Hedgehyssop attract?: Clammy Hedgehyssop draws bees and beetles.
Is Clammy Hedgehyssop HOA-friendly?: Clammy Hedgehyssop 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 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 Clammy Hedgehyssop? Add it to your garden in Pollinator Patch to track it and get season-by-season care guidance.

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