Bahama cassia
Senna mexicana
Last reviewed: October 2026
Bahama cassia (Senna mexicana) is a perennial shrub native to FL. It blooms in June, July, August, September, and October. The flowers draw bees.
Toxicity unknown
Bahama cassia (Senna mexicana) 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
24"–72" H × 24"–48" W
Bloom
Jun, Jul, Aug, Sep, Oct
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 460 programs across 44 states, each with a link to the provider and the date we last checked it.
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Browse plants for this ecoregion
A woody-based perennial or small shrub with compound leaves and bright yellow flowers over a long summer season. Can look somewhat leggy without periodic pruning, but responds well to being cut back.
Growing Bahama cassia
Grow Bahama cassia in full sun and low water. Mature plants reach 24 to 72 inches tall and spread 24 to 48 inches wide.
Wildlife value
Host plant for cloudless sulphur, sleepy orange, orange-barred sulphur.
A key larval host plant for cloudless sulphur, sleepy orange, and orange-barred sulphur butterflies, and its flowers are buzz-pollinated by bees.
Common questions
- How much sun does Bahama cassia need?
- Bahama cassia grows best in full sun conditions.
- When does Bahama cassia bloom?
- Bahama cassia blooms in June, July, August, September, and October.
- Where is Bahama cassia native?
- Bahama cassia (Senna mexicana) is native to FL, per the World Checklist of Vascular Plants (Kew).
- What butterflies or moths does Bahama cassia host?
- Bahama cassia is a larval host plant for cloudless sulphur, sleepy orange, and orange-barred sulphur.
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 Bahama cassia? Add it to your garden in Pollinator Patch to track it and get season-by-season care guidance.