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When to Plant Salsify in Menominee County, WI

Salsify is a root vegetable with a subtle oyster-like flavor, earning it the nickname "oyster plant." It produces long, slender, cream-colored roots.

Menominee County, Wisconsin is in USDA Zone 4a. The average last spring frost is May 9 and the first fall frost is October 4, giving you a growing season of approximately 148 days.

At an elevation of 547 feet, Menominee County receives approximately 33 inches of rainfall annually with predominantly silt loam soil. Summer highs average 83ยฐF, so choose short-season varieties of Salsify to ensure they mature before fall.

Menominee County, WI (Zone 4a) Short season
148 days
Last Spring Frost May 9
148 growing days
First Fall Frost October 4

Menominee County Soil Profile

Soil Type

Silt Loam

Soil pH

6.1-7.1

Drainage

Well Drained

Plant Planting Risk Windows

Early Start (70% safe) ✓ Fits season (2 days to spare)
Transplant: May 3 🍅 Harvest: Aug 16 – Sep 27
Recommended (50%) ✓ Fits season (1 days to spare)
Transplant: May 9 🍅 Harvest: Aug 22 – Oct 3
Safe Start (90%) ✓ Fits season (0 days to spare)
Transplant: May 26 🍅 Harvest: Sep 8 – Oct 20

Percentages indicate frost risk at transplant. The 70% safe window means there is a 30% chance of frost after transplant — suitable for cold-hardy crops or gardeners with frost protection. The 90% safe window is best for tender plants.

Plant Water Budget

Plant needs
1.0″/week
Rainfall provides
0.9″/week
You supply
0.1″/week
Watering frequency Only during dry spells
Season total 84 gal / 100 sq ft
Salsify needs ~1,409 GDD — county provides 1,813 GDD Good fit

Salsify Planting Timeline โ€” Menominee County, WI

Salsify Planting Calendar

Activity When Date Range
Direct Sow May 2 May 2 โ€“ May 23
Fall Sowing July 12 Jul 12 โ€“ Jul 26
Harvest August 15 Aug 15 โ€“ Sep 26

Plant 0.5" deep ยท 6" apart ยท Rows 12" apart

Month-by-Month Timeline

MonthActivities
January โ€”
February โ€”
March โ€”
April โ€”
May Direct Sow
June โ€”
July Fall Sowing
August Harvest
September Harvest
October โ€”
November โ€”
December โ€”

Growing Conditions

Sun

Full Sun (6-8+ hours)

Water

Moderate โ€” regular watering

Days to Maturity

100โ€“130 days

Soil pH

6 โ€“ 7.5

USDA Zone

Zone 4a

Growing Season

148 days

Growing Tips for Menominee County

Direct sow in spring in deeply worked, stone-free soil. Use fresh seed only as viability drops quickly. Harvest in late fall after frost for best flavor.

Companion Planting

Good Companions

Level Up Your Garden

Frequently Asked Questions

When should I plant Salsify in Menominee County, WI?

Menominee County is in Zone 4a with an average last frost of May 9. Plan your Salsify planting based on this frost date โ€” see the calendar above for exact timing.

What planting zone is Menominee County, WI?

Menominee County, Wisconsin is in USDA Hardiness Zone 4a. The average last spring frost is May 9 and first fall frost is October 4.

๐ŸŒฑ

Plan Your Garden with Confidence

Get our free Garden Planner โ€” designed to help Menominee County gardeners in Zone 4a organize planting dates, track what's growing, and never miss a planting window.

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Data sources: USDA Plant Hardiness Zone Map (2023), NOAA 30-Year Climate Normals. Frost dates are based on 50% probability averages for Menominee County, WI. Local conditions may vary. Last updated: April 2026.