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Sulphur Beardtongue

Penstemon attenuatus

Last reviewed: July 2026

Sulphur Beardtongue (Penstemon attenuatus)
Photo: Unknown authorUnknown author / Wikimedia Commons (Public domain)

Light

full sun

Water

low

Size

6"–24" H × 4"–12" W

Bloom

May, Jun, Jul

Native to

ID, MT, OR, WA and 1 more states

Pollinators

bees, hummingbirds

Penstemon attenuatus is a compact native perennial that produces tubular purple-blue flowers from May through July. This drought-tolerant plant maintains its foliage year-round and forms neat clumps that work well in organized garden settings.

In an HOA neighborhood

Sulphur Beardtongue 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

The tubular flowers are particularly attractive to hummingbirds and native bees during the summer blooming period.

Common questions

How much sun does Sulphur Beardtongue need?
Sulphur Beardtongue grows best in full sun conditions.
When does Sulphur Beardtongue bloom?
Sulphur Beardtongue blooms in May, June, and July.
Where is Sulphur Beardtongue native?
Sulphur Beardtongue (Penstemon attenuatus) is native to ID, MT, OR, WA and 1 more states, per the USDA PLANTS Database and regional native plant society lists.
What pollinators does Sulphur Beardtongue attract?
Sulphur Beardtongue draws bees and hummingbirds.
Is Sulphur Beardtongue HOA-friendly?
Sulphur Beardtongue is generally an HOA-friendly choice in the right placement, with low maintenance.

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 Sulphur Beardtongue? 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