Zone 7a covers 30 days of last-frost dates. We measured Fayetteville, AR at Mar 31 and Ogden, UT at Apr 30. Give us your town or ZIP and we'll use ten years of daily lows recorded at your own coordinates instead of the middle of that range.
Why these dates work in zone 7a
Zone 7a's last spring frost averages Apr 13 and first fall frost Nov 12 — about 213 frost-free days. Dill tolerates light frost, so you can sow ahead of the last-frost date and keep harvesting into the cooler fall. There's also room for a fall succession sowing around Sep 24 for a second harvest before frost.
Common questions
How long does dill take to grow in zone 7a?
Dill matures in about 40–55 days from sowing. In zone 7a that means sowing around Mar 30 and first picking around May 9.
Will dill survive frost in zone 7a?
Yes — dill tolerates light frost. In zone 7a you can sow a little before the last frost (around Apr 13) and keep harvesting past the first fall frost (around Nov 12).
Can I plant a second crop of dill in zone 7a?
Yes — in zone 7a there's time for a fall sowing around Sep 24 for a second harvest before frost.
For soil, spacing, pests and companion planting, see the full dill growing guide →