Dahlia in Zone 6a

Dahlia spp.

Method: Direct sow โ€” Direct-sow outside โ€” Dahlia doesn't transplant well, or doesn't need the extra time indoors.

Start indoorsNot typically started indoors
Direct sow / transplant outsideMay 9โ€“May 16
Estimated bloom~90 days after direct-sowing

Spacing: 1 per square foot (square-foot-gardening spacing).

Good companions

No standout companions recorded yet for Dahlia.

Where to buy dahlia bulbs

We haven't vetted bulb/tuber suppliers yet โ€” our seed-supplier list below doesn't carry these. The growing-guide source cited above is a good starting point for where to buy.

See it growing

Search YouTube for "growing dahlia" videos โ†’ (a live search, not a hand-picked video โ€” results vary and aren't vetted by us)

โ† Back to the full zone 6a calendar ยท Full companion planting guide ยท Full plant profile ยท Plan your beds in the Garden Designer โ†’