Parsnip planting dates

At usual odds in 2026: Mar 30 – May 25.

The guide's rule 2 to 4 weeks before last frost to 4 weeks after last frost.

Frost odds · chance of a freezing night after your spring date

The 2026 season

Plant out / sow Frost risk

At all three odds

Frost odds	Plant / sow
Bold (1 in 2)	Mar 23 – May 18
Usual (3 in 10)	Mar 30 – May 25
Careful (1 in 10)	Apr 7 – Jun 2

Days to first harvest: 100-120 from seed
How it goes in: Sow outdoors
Frost: Frost-hardy Takes light frost.
Soil to germinate: 50-70°F

Plan it in your Garden Book

The book checks your date against the window and tells you when the first harvest could come.

Plus Free Garden Books hold 8 plantings a season; Seed Clock Plus holds 120: $1.95/month or $19.50/year. Free during preview What Plus adds

Source: Montana State University Extension, MontGuide MT199308AG, "Can I Grow That Here? Vegetable Seed and Transplant Schedules for Garden or Container" (reviewed August 2013), read with NOAA 1991-2020 freeze odds for Cleveland Hopkins. Wording ours; how we read the guide.