Mexican Ebony
Havardia mexicana
A handsome shade tree with dark, dense foliage and soft cream puffball blooms in spring.
Hardy to about 18-20°F and best in low desert; hard frost may cause partial leaf drop, so protect when young.
AMWUA Notes
Low water use; a handsome drought-tolerant shade tree.
Care Guide
Deep-soak every 2-3 weeks in summer and monthly in cooler months once established.
Wear gloves for the small thorns; train to a single or multi-trunk form and thin the canopy in late winter.
No fertilizer needed; a nitrogen-fixing legume.
Essentially pest-free.
Cream puffball flowers in spring; semi-evergreen, dropping some leaves in hard cold, with seasonal seed pods.
Soil, Feeding & Propagation
Well-draining native or decomposed-granite soil; tolerates caliche, rocky ground, and alkaline pH 7.5–8.5
Needs well-drained soil.
None — thrives in lean desert soil without fertilizer.
Grown from scarified seed; establishes from nursery stock
18–20 ft
Deep, non-aggressive roots are foundation-safe; keep 10+ ft from pools and paths for thorns and pods
Placement Tips
- •Large dense canopy about 20 ft wide for shade or screening; keep 10+ ft from pools and paths because of small thorns and pod litter.
- •Give it 18-20 ft of spread room as a substantial shade or specimen tree.
- •Excellent near-evergreen privacy screen in full sun with good drainage.
- •Site thorns away from walkways and seating.
Features
Best Uses
Companion Plants
Quick Stats
Design Styles
Include in Your Project
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Use this care guide to maintain your Mexican Ebony. Questions about your landscape? Reach out anytime.
Data from 2024 AMWUA “Landscape Plants for the Arizona Desert” guide.
Mexican Ebony — common questions
Answers for low-desert Phoenix conditions, drawn from this plant’s growing data.
How much water does Mexican Ebony need in Phoenix?
Mexican Ebony is a low-water tree once established. Deep-soak every 2-3 weeks in summer and monthly in cooler months once established. Low water use; a handsome drought-tolerant shade tree.
How big does Mexican Ebony get?
Expect roughly 30 ft tall and 20 ft wide at maturity, with a moderate growth rate. Allow about 18–20 ft of spacing when planting. Deep, non-aggressive roots are foundation-safe; keep 10+ ft from pools and paths for thorns and pods.
Can you plant Mexican Ebony near a pool?
Not ideally. Mexican Ebony is not rated pool-friendly, so it is better placed away from the pool deck and skimmer. Litter is rated seasonal.
Can Mexican Ebony handle Arizona heat and winter frost?
Mexican Ebony is hardy in USDA 9-11 and wants full sun. Hardy to about 18-20°F and best in low desert; hard frost may cause partial leaf drop, so protect when young. Cream puffball flowers in spring; semi-evergreen, dropping some leaves in hard cold, with seasonal seed pods.
Does Mexican Ebony have thorns?
Yes — Mexican Ebony has small thorns. Site it back from walkways, seating and pool decks where people brush past.
Is Mexican Ebony safe around pets?
Mexican Ebony is listed as pet-friendly in this guide. If your dog is a determined chewer, check any new plant with your vet before planting.
When does Mexican Ebony bloom in Arizona?
Mexican Ebony blooms in spring, with cream flowers.
How much maintenance does Mexican Ebony need?
Mexican Ebony is moderate-maintenance. Leaf, flower and pod litter is rated seasonal. Wear gloves for the small thorns; train to a single or multi-trunk form and thin the canopy in late winter.
What kind of soil does Mexican Ebony need?
Well-draining native or decomposed-granite soil; tolerates caliche, rocky ground, and alkaline pH 7.5–8.5. It needs no supplemental feeding. No fertilizer needed; a nitrogen-fixing legume.
Is Mexican Ebony native to Arizona?
No. Mexican Ebony is not an Arizona native; it originates from the Baja California, Sonora, Mexico, but it is grown successfully in low-desert landscapes here.