Permascaping, by Homegrown Foods
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Low desert zinnia mound with white flowers

Native & adapted

Desert zinnia

Zinnia acerosa

Also known as Plains zinnia

A fine-textured native mound with crisp white flowers for exposed rock gardens, desert edges, and lean soils.

Arizona nativePollinatorVery low waterCold hardy
Landscape layersGround cover
Mature size6–12 in. tall × 1–2 ft. wide
Climate fitValley suburbs · USDA 9a–9b · Desert outskirts · USDA 8b–9b · High desert · USDA 6a–8b
Special categoriesPOLLINATOR ATTRACTING
Hardiness guidanceCold-hardy across much of Arizona when planted in well-drained soil

Before you plant

These conditions determine whether it will thrive.

Cold hardinessHardy here

Hardy to about 20°F, which covers a normal Phoenix winter. No protection needed in well-drained soil.

Leaves and wood: damaged below 20°F
Heat toleranceTakes full sun and heat

Full sun native that handles west exposures. Drainage matters more than shade.

Sources: amwua.org

Right plant, right place

Will Desert zinnia grow at your Arizona property?

Best in mineral soil with excellent drainage and open air around the crown. Use in clusters where its small scale can read as one flowering ground layer.

Best regional fit: Valley suburbs · USDA 9a–9b, Desert outskirts · USDA 8b–9b, High desert · USDA 6a–8b.

Light

Sun exposure

Full sun.

Water

Irrigation

Very low once established. Supplemental rain-like deep watering can extend bloom.

Planting & stewardship

How to help Desert zinnia thrive

  1. 1

    Plant into native or lightly amended soil rather than a rich, wet garden mix.

  2. 2

    Water to establish, then follow natural wet-dry cycles.

  3. 3

    Tip-prune lightly after flowering if plants become open.

  4. 4

    Avoid burying the crown beneath deep organic mulch.

Read the horticultural reference ↗

Keep exploring

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