Dill in Zone 4a & 4b
Anethum graveolens
When to plant dill in zone 4b
Zones 4a and 4b 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 8–May 15 |
| Estimated harvest | Jul 2–Jul 9 (~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 4's season
Zone 4b's frost-free window runs about 128 days, from May 15 to September 20. 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 4b calendar · Full companion planting guide · Full plant profile · Plan your beds in the Garden Designer →
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Growing Dill in USDA zone 4b: when to start seeds indoors, when to direct-sow, and when to expect a harvest.
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