Island Buckwheat
Eriogonum arborescens
Last reviewed: July 2026
Eriogonum arborescens is a drought-tolerant evergreen shrub native to California's Channel Islands that blooms white to pink from June through September, attracting bees and butterflies.
Island Buckwheat (Eriogonum arborescens) is not on the ASPCA Animal Poison Control Center toxic plant list for dogs or cats (aspca.org (opens in new tab), last reviewed 2026-05-21). If your pet shows symptoms after eating any plant, call the ASPCA at (888) 426-4435.
Light
full sun
Water
low
Size
36"–96" H × 36"–96" W
Bloom
Jun, Jul, Aug, Sep
Native to
CA
Pollinators
bees, butterflies, moths
Browse plants for this ecoregion
Island buckwheat is a large, rounded evergreen shrub with attractive clusters of creamy white flowers that age to rusty pink. Native to the Channel Islands, it features silvery-gray foliage and produces showy blooms from early summer through fall. This drought-tolerant plant thrives in full sun and well-drained soils.
Growing Island Buckwheat
Grow Island Buckwheat in full sun and low water. Mature plants reach 36 to 96 inches tall and spread 36 to 96 inches wide. Expect low maintenance to keep it looking intentional in a front yard.
In an HOA neighborhood
Island Buckwheat is an HOA-friendly choice. Maintenance level: low. Tidiness: 4 out of 5.
Works well in: front yard, foundation, street edge, mid zone.
- Large size may require occasional pruning to maintain tidy appearance
- Spent flower heads can look untidy if not trimmed
Wildlife value
Island buckwheat is highly valuable to pollinators, attracting numerous native bees, butterflies, and moths. The long bloom period provides a consistent nectar source through summer and fall months.
Common questions
- When does Island Buckwheat bloom?
- Eriogonum arborescens blooms from June through September, producing clusters of small white to pink flowers that attract various pollinators.
- What pollinators visit Island Buckwheat?
- Island Buckwheat attracts bees, butterflies, and moths with its abundant nectar-rich flowers during the summer and early fall blooming period.
- Where is Eriogonum arborescens native?
- Island Buckwheat is native to California, specifically endemic to the Channel Islands off the southern California coast.
- What growing conditions does Island Buckwheat prefer?
- This shrub thrives in full sun with low water requirements, making it an excellent choice for drought-tolerant gardens and xeriscaping.
- Is Island Buckwheat toxic to dogs?
- Island Buckwheat is not on the ASPCA Animal Poison Control Center toxic plant list for dogs (aspca.org).
- Is Island Buckwheat toxic to cats?
- Island Buckwheat is not on the ASPCA Animal Poison Control Center toxic plant list for cats (aspca.org).
- Is Island Buckwheat HOA-friendly?
- Island Buckwheat 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 Island Buckwheat? 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