DibbleWhen to plant asparagus in Zone 3
In Zone 3, the last spring frost usually passes around May 15 and the first fall frost arrives around September 15, leaving about 123 frost-free days. The windows below are computed from those frost dates, with the same math the Dibble app uses.
Short, cool season. Start most warm crops indoors and protect from late frosts.
Planting windows for asparagus in Zone 3
| Task | Window |
|---|---|
| Transplant | May 1 to May 15 |
| Estimated harvest | May 1 to Jun 15 |
The harvest estimate counts 365 days to maturity, then a picking window of about 45 days. These windows use typical frost dates for Zone 3; Dibble pins them to your exact ZIP code.
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How to grow asparagus
Plant crowns in a deep trench in early spring. A long-lived perennial, don't harvest the first year or two while it establishes.
Companion plants
Good neighbors for Asparagus:
Better kept apart:
Asparagus in nearby zones
Keep exploring
Asparagus: the full growing guide · The Zone 3 planting calendar · Every crop and zone
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Dates are estimates based on typical frost dates for the zone. Your yard has its own microclimate, so use them as a starting point and adjust as you learn your space.