DibbleWhen to plant marigolds in Zone 5
In Zone 5, the last spring frost usually passes around April 30 and the first fall frost arrives around October 1, leaving about 154 frost-free days. The windows below are computed from those frost dates, with the same math the Dibble app uses.
Classic temperate season. Most vegetables and flowers do well with normal timing.
Planting windows for marigolds in Zone 5
| Task | Window |
|---|---|
| Start seeds indoors | Mar 19 to Apr 2 |
| Transplant | Apr 30 to May 14 |
| Estimated harvest | Jun 19 to Sep 17 |
The harvest estimate counts 50 days to maturity, then a picking window of about 90 days. These windows use typical frost dates for Zone 5; Dibble pins them to your exact ZIP code.
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Marigold in a Zone 5 season
Zone 5 gives about 154 frost-free days. Marigold needs roughly 50 days from transplant. That leaves about 104 days of slack, so there is room for a late start or a second planting.
How to grow marigolds
Start indoors 6 weeks before last frost and transplant around frost date. A classic companion that deters many pests.
Companion plants
Good neighbors for Marigold:
Marigold in other zones
Not in Zone 5? Pick your zone for the same dated windows.
Keep exploring
Marigold: the full growing guide · The Zone 5 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.