Sant cruz island bush-mallow
Malacothamnus hallii
Last reviewed: October 2026
Sant cruz island bush-mallow (Malacothamnus hallii) is a perennial shrub native to CA. It blooms in April, May, June, and July. The flowers draw bees.
Toxicity unknown
Sant cruz island bush-mallow (Malacothamnus hallii) 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
36"–96" H × 36"–72" W
Bloom
Apr, May, Jun, Jul
Native to
CA
Pollinators
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 460 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
An upright, felted gray-leaved shrub called Hall's bushmallow, with soft velvety foliage and clusters of pink hollyhock-like flowers held along the stems through spring and summer.
Growing Sant cruz island bush-mallow
Grow Sant cruz island bush-mallow in full sun and low water. Mature plants reach 36 to 96 inches tall and spread 36 to 72 inches wide.
Wildlife value
Host plant for west coast lady.
A larval host plant for west coast lady butterflies, and its long bloom period supports native bees.
Common questions
- How much sun does Sant cruz island bush-mallow need?
- Sant cruz island bush-mallow grows best in full sun conditions.
- When does Sant cruz island bush-mallow bloom?
- Sant cruz island bush-mallow blooms in April, May, June, and July.
- Where is Sant cruz island bush-mallow native?
- Sant cruz island bush-mallow (Malacothamnus hallii) is native to CA, per the World Checklist of Vascular Plants (Kew).
- What butterflies or moths does Sant cruz island bush-mallow host?
- Sant cruz island bush-mallow is a larval host plant for west coast lady.
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 Sant cruz island bush-mallow? Add it to your garden in Pollinator Patch to track it and get season-by-season care guidance.