United States / Grow / senna

senna (Cassia floribunda)
Photo: (c) Carlos Fonseca, some rights reserved (CC BY) (CC BY), via iNaturalist. Species-typical, not necessarily this cultivar.

senna

Cassia floribunda (accepted: Senna floribunda) · Fabaceae · all Cassia records · also called Smooth Cassia · syn. Cassia floribunda

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Form
shrub
Rated in
Tasmania, Australia
On this lot

1. Fire evidence and conditions

Fire evidence
Mixed evidence — location does not change the cited classification.
Placement evidence
1 source placement record; source schemes remain separate.
Evidence regions
Tasmania, Australia

2. Why this plant is relevant here

State distribution
Documented in PR.

3. Legal, ecological, and broader status

How to read this page

The status above is computed from the cited rows below: independent recommendations can support a fire-resistant result, an avoid row can produce keep-away, and disagreement stays visible as conflict. Placement notes preserve each source’s own scheme rather than translating unlike rules into one scale. This is evidence about a plant, not permission to plant it in every part of the defensible space; Zone 0 remains noncombustible.

Where its sources say to plant it

Placement rules below use each source's own distances or named zones, tied to its rating. They are not interchangeable with the directory's current Zone 0 guidance.

The evidence

Grouped by what each source concluded. Primary evidence rated the plant itself (a lab, field program, or original curation); corroboration compiled or republished another source's rating and resolves to its root lineage.

Mid-scale / conditional (1)

Fire-resistant shrubs instead

Last verified 2026-08-23. JSON (CC BY 4.0)

Profiles: USDA PLANTS · GBIF ·

Cassia floribunda (Smooth Cassia). FireApproved. https://fireapproved.com/plants/cassia-floribunda/. Last verified 2026-08-23.