Also known as Knotweed · 0 saves
Reynoutria
Reynoutria, the genus most gardeners know as knotweed. We track 1 varieties; the ones most used by real gardeners.
The 1 most-saved Reynoutria varieties
Track your Reynoutria in Sow
Save the Reynoutria you grow and get care reminders timed to your zone.
Reynoutria questions
How many types of Reynoutria are there?
The Sow catalog tracks 1 distinct Reynoutria varieties. The most popular — ranked by 0 real gardeners — are shown first above.
What zones does Reynoutria grow in?
Across its varieties, Reynoutria 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 Reynoutria bloom?
Most Reynoutria varieties bloom in late summer. Staggering early, mid, and late varieties extends the genus's season in one bed.
Which Reynoutria 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.