Senna
Senna
Varieties We Bring In
Last received Jul 19, 2026.
We bring this in seasonally, so what is on the lot changes week to week. A received date shows when it last came in, not that it is here today.
Call (904) 471-0440 to confirm this plant and size before you make the trip.
About Senna
Cassia or Senna (Senna spp.) is a genus of tropical shrubs and small trees in the legume family, known for their profuse clusters of bright yellow five-petaled flowers and attractive pinnate foliage. Many species are native to the Americas and are important larval host plants for sulphur butterflies. Starting at $7.95.
Plant details
- Bloom Season
- Fall, Winter (peak Oct–Jan in NE FL; some species nearly year-round)
- Flower Color
- Yellow
- Growth Rate
- Fast
- Foliage
- Evergreen
- Soil
- Sandy, Loam, Well-drained
Best planting months
Seasonal care
Good planting window.
Bloom season.
Bloom season. Ideal planting window.
Retains foliage through winter.
Care essentials
Plant Senna in full sun for best flowering; it is well-adapted to Northeast Florida's heat and requires at least 6 hours of direct sun daily.
Drought-tolerant once established; water during dry spells in the first season to establish deep roots. Mature plants rarely need supplemental irrigation in NE Florida's summer rainfall pattern.
Adaptable to sandy or loamy, well-drained soils typical of Northeast Florida; tolerates poor fertility. Fertilize lightly in spring with a balanced slow-release fertilizer. If frosted back, cut stems to the ground — vigorous regrowth will follow in spring.
Similar needs
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Firecracker Plant
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Indian Hawthorn
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Ixora
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Common questions
Is Senna a good plant for St. Augustine?
Senna is a shrub for Zone 9b coastal Florida gardens, with medium salt tolerance, reaching 4-20 feet × 4-15 feet.
Care information verified from
Last reviewed February 2026. Our care guidance comes from trusted horticulture sources and decades of helping St. Augustine gardeners. Conditions here can vary dramatically from one area to the next, so come ask us and we'll tailor it to your yard.