With average minimum winter temperatures near freezing, such landscape plants as photinia (Photinia serrulata), Heavenly bamboo (Nandina domestica), Pomegranate (Punica granatum) and Silk tree (Albizia julibrissin) grow well. However, in most of this zone, winters are mild enough for success with Crepe myrtle (Lagerstroemia indica), Euonymus (Euonymus sp.), Southern magnolia (Magnolia grandiflora) and Glossy privet (Ligustrum lucidum). The growing season in this zone is about 200-220 days long.
In the southern part of zone 3, spring frosts are over by the end of March. Other areas are generally safe after April 10. Annual rainfall ranges from 10-15 inches to 15-20 inches.
Cross Reference to Other Plant Hardiness/Climate Zone Systems
USDA Plant Hardiness Zone System: roughly equivilent to USDA Zone 7 (Average Annual Minimum Temperature = 0 to 10 degrees F).
Sunset Western Climate Zone System: equivilent to Sunset Zone 10 described in Sunset Western Garden Book.
Back to Arizona Climate Zone Map
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