How to grow rhubarb
Rheum rhabarbarum
Get your exact dates
The windows below are relative to your frost dates. Enter your ZIP for the calendar dates.
Open the planting calendarWhen to plant rhubarb
Start seeds indoors6 weeks before your last spring frost
Growing conditions
- Spacing
- 36 in apart
- Sun
- Full sun
- Water
- 1 in per week
Common problems
- rhubarb curculio
- stalk borer
- leaf spot
- root rot
- crown rot
Rhubarb by hardiness zone
Planting dates for a typical location in each zone:
Sources
Last updated 2026-06-11.