Guaiacum
Guaiacum sanctum
Last reviewed: September 2026
Toxicity unknown
Guaiacum (Guaiacum sanctum) is not listed by the ASPCA Animal Poison Control Center (opens in new tab) or the other sources we check, so we have no verdict for it either way. Absence from those lists is not a clearance. If your pet shows symptoms after eating any plant, call the ASPCA at (888) 426-4435.
Light
full sun
Water
low
Size
96"–300" H × 96"–240" W
Bloom
Mar, Apr, May, Jun
Native to
FL
Pollinators
bees
Before you buy
Your city may pay you to plant this
Cities and water utilities offer rebates for replacing lawn with native and water-wise plants. We track 452 programs across 44 states, each with a link to the provider and the date we last checked it.
Find rebates in your areaBrowse plants for this ecoregion
Slow-growing evergreen tree with dense, dark green compound leaves and clusters of vivid blue five-petaled flowers that appear repeatedly through the warm season, followed by yellow-orange seed capsules that split to reveal red-coated seeds. One of the densest woods of any tree.
Wildlife value
Showy flowers attract bees, and the fruit is eaten by birds.
Common questions
- How much sun does Guaiacum need?
- Guaiacum grows best in full sun conditions.
- When does Guaiacum bloom?
- Guaiacum blooms in March, April, May, and June.
- Where is Guaiacum native?
- Guaiacum (Guaiacum sanctum) is native to FL, per the World Checklist of Vascular Plants (Kew).
- What pollinators does Guaiacum attract?
- Guaiacum draws bees.
Native range data from the World Checklist of Vascular Plants (Kew). Pollinator and host plant associations compiled from GBIF, iNaturalist, and published ecological literature.
If something looks wrong
Common plant problems, and what to check first
These come up on almost any plant. Each guide lists the likely causes in the order they are worth ruling out, with one thing to check before you act on any of them, and links to the source it came from.
- It is dying right after planting
- Leaves turning yellow
- Wilting even though I watered it
- Brown crispy leaf tips
- Bugs on the plant
Ready to grow Guaiacum? Add it to your garden in Pollinator Patch to track it and get season-by-season care guidance.
Planning a bed around it? Start a free plan with this plant
Not sure where to start? Take the 2-minute yard quiz