DibbleWhen to plant nasturtium 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 nasturtium in Zone 3
| Task | Window |
|---|---|
| Direct sow | May 22 to Jun 5 |
| Estimated harvest | Jul 11 to Oct 9 |
The harvest estimate counts 50 days to maturity, then a picking window of about 90 days. These windows use typical frost dates for Zone 3; Dibble pins them to your exact ZIP code.
Get reminders for these exact dates
Dibble turns your ZIP code into a full planting calendar and reminds you on the right day. Free to start, no account needed.
How to grow nasturtium
Sow seeds after last frost in lean soil. The edible leaves and flowers lure aphids away from your vegetables.
Companion plants
Good neighbors for Nasturtium:
Nasturtium in nearby zones
Keep exploring
Nasturtium: the full growing guide · The Zone 3 planting calendar · Every crop and zone
Plant at the right time this season
Dibble builds your calendar in under a minute. Free to start, no account needed.
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.