Davidson's penstemon
Penstemon davidsonii
Last reviewed: September 2026

Toxicity unknown
Davidson's penstemon (Penstemon davidsonii) 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
full sun
Water
low
Size
2"–6" H × 8"–16" W
Bloom
Jun, Jul, Aug
Native to
CA, NV, OR, WA
Pollinators
bumble bees, hummingbirds
Before you buy
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A mat-forming, woody subshrub with small, thick, glossy leaves that hug rocky ground, topped with large, showy, purple-blue tubular flowers relative to the plant's small size. Grows on rocky alpine and subalpine slopes and talus.
Wildlife value
The oversized, nectar-rich flowers attract bumble bees and occasionally hummingbirds in high-elevation rock garden habitat.
Common questions
- How much sun does Davidson's penstemon need?
- Davidson's penstemon grows best in full sun conditions.
- When does Davidson's penstemon bloom?
- Davidson's penstemon blooms in June, July, and August.
- Where is Davidson's penstemon native?
- Davidson's penstemon (Penstemon davidsonii) is native to CA, NV, OR, WA, per the World Checklist of Vascular Plants (Kew).
- What pollinators does Davidson's penstemon attract?
- Davidson's penstemon draws bumble bees and hummingbirds.
Native range data from the World Checklist of Vascular Plants (Kew). 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.
- It is dying right after planting
- Leaves turning yellow
- Wilting even though I watered it
- Brown crispy leaf tips
- Bugs on the plant
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