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Rough False Pennyroyal

Hedeoma hispida

Last reviewed: June 2026

Rough False Pennyroyal (Hedeoma hispida)
Photo: NPS Staff / Wikimedia Commons (Public domain)

Light

full sun

Water

low

Size

4"–16" H × 4"–12" W

Bloom

Jun, Jul, Aug

Native to

AL, AR, CO, CT and 26 more states

Pollinators

bees, wasps

Rough false pennyroyal is a small, aromatic annual herb that forms low, spreading mats in sunny locations. It produces tiny white or pale purple flowers from June through August and thrives in dry conditions with minimal care.

In an HOA neighborhood

Rough False Pennyroyal 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.

  • Very small size makes it appear weedy
  • Annual nature means gaps in coverage
  • Informal wild appearance doesn't suit maintained landscapes

Wildlife value

The small flowers attract native bees and beneficial wasps during the summer months. As an annual, it provides seasonal nectar resources for smaller pollinators.

Common questions

How much sun does Rough False Pennyroyal need?
Rough False Pennyroyal grows best in full sun conditions.
When does Rough False Pennyroyal bloom?
Rough False Pennyroyal blooms in June, July, and August.
Where is Rough False Pennyroyal native?
Rough False Pennyroyal (Hedeoma hispida) is native to AL, AR, CO, CT and 26 more states, per the USDA PLANTS Database and regional native plant society lists.
What pollinators does Rough False Pennyroyal attract?
Rough False Pennyroyal draws bees and wasps.
Is Rough False Pennyroyal HOA-friendly?
Rough False Pennyroyal 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 USDA PLANTS Database and regional native plant society lists. Pollinator and host plant associations compiled from GBIF, iNaturalist, and published ecological literature.

Ready to grow Rough False Pennyroyal? Add it to your garden in Pollinator Patch to track it and get season-by-season care guidance.

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