Desert globemallow

Sphaeralcea ambigua

Family:: Malvaceae
Elevation:: 1,000 ft – 5,000 ft
Bloom:: Mar – Jun
Region:: Southwest

A mounding perennial with gray-green, felted leaves and cup-shaped flowers in glowing apricot-orange (sometimes pink, red, or white). A tough, cheerful bloomer that colors desert washes and roadsides in spring.

Care · tuned to the Southwest

Water

Extremely drought tolerant; established plants need little to no water. Overwatering causes flop, legginess, and rot. A good soaking or monsoon rains can spur a second round of bloom.

Sun & exposure

Full sun and reflected heat; shade makes it sparse and floppy.

Soil

Prefers lean, rocky, gravelly, or sandy soil with excellent drainage; thrives in alkaline and caliche ground. Avoid rich or wet soils.

In the Southwest

Cold hardy into the low teens Fahrenheit or below. Shear back hard after the main bloom to refresh foliage and encourage rebloom. Self-sows freely. The fine leaf hairs can irritate eyes ('sore-eye poppy'). Visited by native and specialist mallow bees.

Common problems & fixes

Flops open and looks ragged after blooming
Fix — Cut it back hard after the main bloom to force compact, fresh regrowth.
Rust and leaf disease in humid or crowded conditions
Fix — Space plants for airflow, avoid overhead watering, and remove rust-spotted foliage.

Pets & toxicity

Not known to be toxic to dogs, cats, or livestock.

Easy to confuse with

Scarlet globemallow (Sphaeralcea coccinea) — lower, more spreading, with deeply lobed leaves
Gooseberryleaf globemallow (Sphaeralcea grossulariifolia) — very similar; distinguished by leaf shape and habit

Sources

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