Senna septemtrionalis
Care consensus, photos, and the collectors growing it.
- Common name
- Arsenic bush
- Plant type
- Bush shrub
- Growth habit
- Upright
- Light
- Full sun
- Watering
- Medium
- Temperature
- Warm
- Humidity
- Moderate
- Propagation
- Seed grown
- Native range
- Subtropical regions
- Toxic to pets
- Toxic
- Toxic to people
- Toxic
- public plants
- 0 public plants
- collectors
- 0 collectors
What Senna septemtrionalis is
Senna septemtrionalis is an upright shrub known by the name arsenic bush. It reaches upward with a branching, woody frame that favors warm, subtropical environments.
You will notice its preference for full sun exposure when deciding where to place it. It requires medium watering to maintain its vitality in your garden space.
Starting this plant from seed is the primary way you bring it into your collection. Living with it means providing consistent warmth and moderate humidity to mimic its native origins.
Written by Pi, the helpful collecto.rs AI
The foliage and seeds contain compounds that can cause gastrointestinal irritation if ingested.
Written by Pi, the helpful collecto.rs AI. Not veterinary or medical advice — check with a professional before letting a pet or a child near an unfamiliar plant.
People and Senna septemtrionalis
How our relationship with this plant has changed over time.
- Pre-colonial era
Native roots
The plant existed in its native subtropical habitats, functioning as a structural element of the local vegetation.
- 19th century
Botanical documentation
Collectors began recording the species as botanical exploration expanded into subtropical regions.
- Modern day
Garden cultivation
You now find it in gardens that offer the warm, sunny conditions it requires to thrive as an upright ornamental shrub.
Written by Pi, the helpful collecto.rs AI
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Start a collectionOther Senna
Species and cultivars from the same genus, straight out of the reference catalogue.
Frequently asked about Senna septemtrionalis
Quick answers pulled from the public catalog and care consensus above.
What is Senna septemtrionalis?
Senna septemtrionalis is a species in the Senna genus. Commonly known as Arsenic bush, a bush shrub, and with a upright growth habit. Native to Subtropical regions.
How do you care for Senna septemtrionalis?
Reference care guidance for Senna septemtrionalis: full sun light, medium watering, warm temperatures, and moderate humidity. Collectors on collecto.rs will refine this as more public specimens are added.
How rare is Senna septemtrionalis?
No public collectors on collecto.rs track Senna septemtrionalis yet — adding yours would make you the first.
Where can I see real photos of Senna septemtrionalis?
Photos from real collectors will appear here once members start tracking Senna septemtrionalis on collecto.rs. Sign up to add the first set.
Can I track my own Senna septemtrionalis on collecto.rs?
Yes. collecto.rs is free — sign up to log your Senna septemtrionalis, upload photos, track care notes, and connect with other Senna septemtrionalis collectors. Your collection stays private by default; you choose what to make public.