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Hairy Galinsoga

Galinsoga quadriradiata

Last reviewed: August 2026

Hairy Galinsoga (Galinsoga quadriradiata)
Photo: (c) Mario Bassini, some rights reserved (CC BY), uploaded by Mario Bassini

Toxicity unknown

Hairy Galinsoga (Galinsoga quadriradiata) 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

medium

Size

6"–24" H × 6"–18" W

Bloom

Jun, Jul, Aug, Sep

Pollinators

bees, flies, beetles

Native alternatives to Hairy Galinsoga

Hairy Galinsoga is not native to the United States. These natives fill a similar role in a planting, matched on bloom season, bloom color and mature size.

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.

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Hairy galinsoga is a small annual wildflower that produces tiny white daisy-like blooms from summer through early fall. This adaptable plant thrives in partial shade with moderate water needs and typically reaches 6 to 24 inches in height.

In an HOA neighborhood

Hairy Galinsoga takes more care to keep looking intentional in a front yard. Maintenance level: low. Consider it for backyard or mid-zone beds rather than the street edge.

Works well in: backyard only.

  • Often considered a weedy annual
  • Small flowers may look unkempt in formal settings
  • Self-seeds readily and can spread unpredictably

Wildlife value

The small flowers attract a variety of beneficial insects including native bees, flies, and beetles throughout the long blooming season from June through September.

Common questions

How much sun does Hairy Galinsoga need?
Hairy Galinsoga grows best in part shade conditions.
When does Hairy Galinsoga bloom?
Hairy Galinsoga blooms in June, July, August, and September.
What pollinators does Hairy Galinsoga attract?
Hairy Galinsoga draws bees, flies, and beetles.
Is Hairy Galinsoga HOA-friendly?
Hairy Galinsoga takes more care to look intentional in a front yard. Consider it for backyard or mid-zone beds rather than the street edge.

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

Ready to grow Hairy Galinsoga? 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

Not sure where to start? Take the 2-minute yard quiz