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← How to grow asparagus
Planting Calendar · Zone 3A

When to plant asparagus in zone 3a

In USDA zone 3a, plant asparagus around May 16, and harvest from May 15.

We don’t publish a planting calendar for zone 3a, because every date on one would be counted from a last-frost date this zone doesn’t reliably have. Asparagus takes about 730–1095 days from transplanting to first picking, and that part holds anywhere. For real dates, tell us where you are below and Garzed reads ten years of weather at your own coordinates.

Why these dates work in zone 3a

Zone 3a's last spring frost averages May 30 and first fall frost Sep 10 — about 103 frost-free days. Asparagus tolerates light frost, so you can set plants out ahead of the last-frost date and keep harvesting into the cooler fall. One caveat: we haven't yet checked zone 3a against the weather archive, so those frost dates are an inherited estimate rather than a measurement. Give Garzed your location and it works from that location's own ten-year record instead.

Common questions

How long does asparagus take to grow in zone 3a?

Asparagus matures in about 730–1095 days from transplanting. In zone 3a that means setting plants out around May 16 and first picking around May 15.

Will asparagus survive frost in zone 3a?

Yes — asparagus tolerates light frost. In zone 3a you can set plants out a little before the last frost (around May 30) and keep harvesting past the first fall frost (around Sep 10).

For soil, spacing, pests and companion planting, see the full asparagus growing guide →