Also known as Marshmallow · 1 saves
Althaea
Althaea, the genus most gardeners know as marshmallow. We track 1 varieties; the ones most used by real gardeners.
The 1 most-saved Althaea varieties
Species of Althaea
Each one is a parent of the varieties above.
Track your Althaea in Sow
Save the Althaea you grow and get care reminders timed to your zone.
Althaea questions
How many types of Althaea are there?
The Sow catalog tracks 1 distinct Althaea varieties. The most popular — ranked by 1 real gardeners — are shown first above.
What zones does Althaea grow in?
Across its varieties, Althaea covers USDA Zones 4–9. Individual varieties differ — each plant page lists its exact range, and Sow filters the catalog to your zone automatically.
When does Althaea bloom?
Most Althaea varieties bloom in summer. Staggering early, mid, and late varieties extends the genus's season in one bed.
Which Althaea 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.