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When to Plant Salsify in Divide County, ND

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

Divide County, North Dakota is in USDA Zone 3b. The average last spring frost is May 15 and the first fall frost is September 20, giving you a growing season of approximately 128 days.

At an elevation of 994 feet, Divide County receives approximately 20.5 inches of rainfall annually with predominantly loam soil. Summer highs average 79ยฐF, so choose short-season varieties of Salsify to ensure they mature before fall.

Divide County, ND (Zone 3b) Short season
128 days
Last Spring Frost May 15
128 growing days
First Fall Frost September 20

Divide County Soil Profile

Soil Type

Loam

Soil pH

6.2-7.6

Drainage

Well Drained

Plant Planting Risk Windows

Early Start (70% safe) ✓ Fits season (2 days to spare)
Transplant: May 12 🍅 Harvest: Aug 25 – Sep 15
Recommended (50%) ✓ Fits season (2 days to spare)
Transplant: May 15 🍅 Harvest: Aug 28 – Sep 18
Safe Start (90%) ✓ Fits season (5 days to spare)
Transplant: May 27 🍅 Harvest: Sep 9 – Sep 30

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
0.7″/week
You supply
0.4″/week
Watering frequency 1-2 times/week
Season total 447 gal / 100 sq ft
Drought risk

Water stress score is 10/10 โ€” consider drought-tolerant varieties and mulching

Salsify needs ~1,064 GDD — county provides 1,184 GDD Good fit

Salsify Planting Timeline โ€” Divide County, ND

Salsify Planting Calendar

Activity When Date Range
Direct Sow May 8 May 8 โ€“ May 29
Fall Sowing June 28 Jun 28 โ€“ Jul 12
Harvest August 21 Aug 21 โ€“ Sep 11

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 Fall Sowing
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 3b

Growing Season

128 days

Growing Tips for Divide 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 Divide County, ND?

Divide County is in Zone 3b with an average last frost of May 15. Plan your Salsify planting based on this frost date โ€” see the calendar above for exact timing.

What planting zone is Divide County, ND?

Divide County, North Dakota is in USDA Hardiness Zone 3b. The average last spring frost is May 15 and first fall frost is September 20.

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Plan Your Garden with Confidence

Get our free Garden Planner โ€” designed to help Divide County gardeners in Zone 3b organize planting dates, track what's growing, and never miss a planting window.

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Free download. Plan your entire garden season in minutes.

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