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Sant cruz island bush-mallow

Malacothamnus fasciculatus

Last reviewed: September 2026

Sant cruz island bush-mallow (Malacothamnus fasciculatus)

Toxicity unknown

Sant cruz island bush-mallow (Malacothamnus fasciculatus) 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

48"–120" H × 48"–96" W

Bloom

Apr, May, Jun, Jul

Native to

CA

Pollinators

bees, butterflies

Before you buy

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A gray-felted, upright shrub with clustered pale pink flowers along arching stems. It spreads by root suckers and resprouts vigorously after fire or pruning, giving it a somewhat rangy habit.

Wildlife value

Host plant for west coast lady.

An important mallow-family nectar and larval host plant for West Coast lady and related butterflies.

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 fasciculatus) is native to CA, per vouchered herbarium specimen records and regional native plant society lists.
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 vouchered herbarium specimen records and regional native plant society lists. 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.

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