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Senna
We track 1 varieties; the ones most used by real gardeners.
The 1 most-saved Senna varieties
Species of Senna
Each one is a parent of the varieties above.
Track your Senna in Sow
Save the Senna you grow and get care reminders timed to your zone.
Senna questions
How many types of Senna are there?
The Sow catalog tracks 1 distinct Senna varieties. The most popular — ranked by 0 real gardeners — are shown first above.
What zones does Senna grow in?
Across its varieties, Senna covers USDA Zones 9–10. Individual varieties differ — each plant page lists its exact range, and Sow filters the catalog to your zone automatically.
When does Senna bloom?
Most Senna varieties bloom in winter. Staggering early, mid, and late varieties extends the genus's season in one bed.
Which Senna should I choose?
Start from the most-saved varieties above — popularity across thousands of gardens is a strong signal of reliability — then filter by your zone and sun. In the Sow app you can preview any of them in a photo of your actual yard before you buy.