Also known as Milk Thistle · 2 saves
Silybum
Silybum, the genus most gardeners know as milk thistle. We track 1 varieties; the ones most used by real gardeners.
The 1 most-saved Silybum varieties
Species of Silybum
Each one is a parent of the varieties above.
Track your Silybum in Sow
Save the Silybum you grow and get care reminders timed to your zone.
Silybum questions
How many types of Silybum are there?
The Sow catalog tracks 1 distinct Silybum varieties. The most popular — ranked by 2 real gardeners — are shown first above.
What zones does Silybum grow in?
Across its varieties, Silybum covers USDA Zones 5–9. Individual varieties differ — each plant page lists its exact range, and Sow filters the catalog to your zone automatically.
When does Silybum bloom?
Most Silybum varieties bloom in summer. Staggering early, mid, and late varieties extends the genus's season in one bed.
Which Silybum 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.