Island manzanita
Arctostaphylos insularis
Last reviewed: October 2026
Island manzanita (Arctostaphylos insularis) is a perennial shrub native to CA. It blooms in December, January, and February. The flowers draw bees and hummingbirds.

Toxicity unknown
Island manzanita (Arctostaphylos insularis) 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
60"–144" H × 60"–120" W
Bloom
Dec, Jan, Feb
Native to
CA
Pollinators
bees, hummingbirds
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 460 programs across 44 states, each with a link to the provider and the date we last checked it.
Find rebates in your areaPicture natives in your own yard
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Browse plants for this ecoregion
A large evergreen shrub with smooth mahogany-red bark and small clusters of white to pale pink urn-shaped flowers in winter. Reddish-brown berries follow and are favored by birds.
Growing Island manzanita
Grow Island manzanita in full sun and low water. Mature plants reach 60 to 144 inches tall and spread 60 to 120 inches wide.
Wildlife value
Host plant for brown elfin.
Winter flowers feed bees and hummingbirds when little else blooms, and the foliage hosts brown elfin caterpillars.
Common questions
- How much sun does Island manzanita need?
- Island manzanita grows best in full sun conditions.
- When does Island manzanita bloom?
- Island manzanita blooms in December, January, and February.
- Where is Island manzanita native?
- Island manzanita (Arctostaphylos insularis) is native to CA, per the World Checklist of Vascular Plants (Kew).
- What butterflies or moths does Island manzanita host?
- Island manzanita is a larval host plant for brown elfin.
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 Island manzanita? Add it to your garden in Pollinator Patch to track it and get season-by-season care guidance.
