Scientific Name: Zinnia acerosa (DC.) A. Gray
Synonym: Zinnia pumila
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Recommended Temperature Zone:|
Frost Tolerance: Hardy in Phoenix
Sun Exposure: Full sun
Origin: Southwestern USA, northern Mexico
Growth Habits: Perennial to 2 feet in diameter (60 cm), 10 inches tall (25 cm)
Watering Needs: Survive with little water if any, but needs rain or irrigation to bloom or grow
The Desert Zinnia is useful in harsh arid environment where it will receive minimum care. It will need water to grow and bloom, but an occasional watering with a hose will do the job.
Cut back to the ground every other year to avoid a straggly look.
The Zinnia acerosa blooms in March-April, the flower is off white, 1.5 inches in diameter (3.7 cm). In colder areas the flowers can occasionally be damaged by frost.