How to grow dahlia
Dahlia spp.
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 dahlia
Transplant outdoorsat your last spring frost to 2 weeks after your last spring frost
Growing conditions
- Planting depth
- 4 in
- Sun
- Full sun
Common problems
- deer browsing
- tuber storage rot
Dahlia by hardiness zone
Planting dates for a typical location in each zone:
Sources
Last updated 2026-06-11.