Mountain boykinia
Boykinia major
Last reviewed: November 2026
Mountain boykinia (Boykinia major) is a perennial forb native to CA, ID, MT, OR. It blooms in June and July. The flowers draw flies and small bees.
Watering reminders and freeze alerts for Mountain boykinia, free in the app.
Toxicity unknown
Mountain boykinia (Boykinia major) 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
high
Size
12"–30" H × 12"–24" W
Bloom
Jun, Jul
Native to
CA, ID, MT, OR
Pollinators
flies, small bees
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 461 programs across 44 states, each with a link to the provider and the date we last checked it.
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Browse plants for this ecoregion
A clumping perennial with large, deeply lobed maple-like leaves and tall wiry stems topped with loose clusters of small white flowers. Grows along streambanks and wet rocky seeps.
Growing Mountain boykinia
Grow Mountain boykinia in part shade and high water. Mature plants reach 12 to 30 inches tall and spread 12 to 24 inches wide.
Wildlife value
The open flower clusters attract small native bees and pollinating flies.
Common questions
- How much sun does Mountain boykinia need?
- Mountain boykinia grows best in part shade conditions.
- When does Mountain boykinia bloom?
- Mountain boykinia blooms in June and July.
- Where is Mountain boykinia native?
- Mountain boykinia (Boykinia major) is native to CA, ID, MT, OR, per the World Checklist of Vascular Plants (Kew).
- What pollinators does Mountain boykinia attract?
- Mountain boykinia draws flies and small bees.
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
Ready to grow Mountain boykinia? Add it to your garden in the Pollinator Patch App to track it and get season-by-season care guidance.