Dill in Zone 3a & 3b
Anethum graveolens
When to plant dill in zone 3b
Zones 3a and 3b share the same average frost dates in our data, so this page covers both.
Method: Direct sow: Direct-sow outside. Dill doesn't transplant well, or doesn't need the extra time indoors.
| Start indoors | Not typically started indoors |
|---|---|
| Direct sow / transplant outside | May 23–May 30 |
| Estimated harvest | Jul 17–Jul 24 (~55 days after direct-sowing) |
Spacing: 4 per square foot (square-foot-gardening spacing). Mature height: 2-3 ft.
Dill is an easy, low-maintenance herb that mostly takes care of itself once it's in the ground, the main thing to get right is where you plant it, since mature dill doesn't get along with one of the garden's most common root crops.
How dill fits zone 3's season
Zone 3b's frost-free window runs about 98 days, from May 30 to September 5. Dill needs about 55 days from sowing to first harvest.
Good companions
- Cabbage: Attracts beneficial predatory insects that protect brassicas.
Where to buy dill seeds
See why we recommend these suppliers →
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See it growing
Search YouTube for "growing dill" videos → (a live search, not a hand-picked video; results vary and aren't vetted by us)
← Back to the full zone 3b calendar · Full companion planting guide · Full plant profile · Plan your beds in the Garden Designer →
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Growing Dill in USDA zone 3b: when to start seeds indoors, when to direct-sow, and when to expect a harvest.
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