in Tucson, Phoenix,
Arizona and California

Gardening in Tucson, Phoenix, Arizona and California

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Zinnia acerosa: Desert Zinnia

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Form: Mounding herb.
Lifespan: Perennial.
Leaf retention: Evergreen but damaged at 25°F.
Growth rate: Moderate to rapid.
Mature Size: 1' high and 1.5' wide.
Flowers: White rays with yellow, aging to brown, disk flowers (in center).
Bloom: Spring, then again after summer rains arrive, even into fall.
Fruit: Seeds in flower head.
Leaves: Dull green, narrow, stiff, pointed tip.
Stems: No thorns.
Roots: Bulb.
Wildlife: Attracts butterflies and bees.
Toxic / Danger: Leaves and bulb are poisonous.
Origin: Arizona to Texas, Utah and Mexico.

Cultivation and Uses
USDA hardiness zones: 6-10.
Heat tolerant: Yes.
Drought tolerant: Yes.
Sun: Full sun.
Water once established: Monthly.
Soil: Well drained, dry, pH 5.6-8.5 (acidic to alkaline).
Prune: After last frost, remove winter damage.
Litter: Low.
Propagation: Seed.
Uses: Ornamental, butterfly garden.

A member of the Aster family and related to Zinnia grandiflora. The butterfly in the picture is a female Checkered White.

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Zinnia acerosa: Desert Zinnia - flowers

Zinnia acerosa: Desert Zinnia