Plants We Love: Ironwood tree (Olneya tesota)

Discover why native-plant experts in Arizona recommend the ironwood tree.
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Plant name:Ironwood tree



Botanical name: Olneya tesota

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Height: 20-30 ft. (6-9 m)

Spacing: 20-30 ft. (6-9 m)

Hardiness: USDA Zone 8 to 10

Sun Exposure: Full Sun

Danger: Plant has spines or sharp edges; use extreme caution when handling

Bloom Color: Pink

Bloom Time: Late Spring/Early Summer

Foliage: Evergreen

Other details: Drought-tolerant; suitable for xeriscaping

Soil pH requirements:

6.6 to 7.5 (neutral)

7.6 to 7.8 (mildly alkaline)

7.9 to 8.5 (alkaline)

Propagation Methods:

Scarify seed before sowing

Seed Collecting:

Allow pods to dry on plant; break open to collect seeds

Information courtesy of Dave’s Garden