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When to Plant Salsify in Kittitas County, WA

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

Kittitas County, Washington is in USDA Zone 6a. The average last spring frost is May 7 and the first fall frost is October 2, giving you a growing season of approximately 148 days.

At an elevation of 2,468 feet, Kittitas County receives approximately 18.9 inches of rainfall annually with predominantly silt loam soil. Summer highs average 90ยฐF, providing good warmth for Salsify during the growing season. With low rainfall, drip irrigation is essential for growing Salsify successfully. Mulch heavily to conserve soil moisture.

Kittitas County, WA (Zone 6a) Short season
148 days
Last Spring Frost May 7
148 growing days
First Fall Frost October 2

Kittitas County Soil Profile

Soil Type

Silt Loam

Soil pH

5.5-6.7

Drainage

Well Drained

Plant Planting Risk Windows

Early Start (70% safe) ✓ Fits season (3 days to spare)
Transplant: Apr 30 🍅 Harvest: Aug 13 – Sep 24
Recommended (50%) ✓ Fits season (1 days to spare)
Transplant: May 7 🍅 Harvest: Aug 20 – Oct 1
Safe Start (90%) ✓ Fits season (3 days to spare)
Transplant: May 24 🍅 Harvest: Sep 6 – Oct 18

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
0.5″/week
You supply
0.6″/week
Watering frequency 1-2 times/week
Season total 733 gal / 100 sq ft
Drought risk

Water stress score is 6/10 โ€” consider drought-tolerant varieties and mulching

Salsify needs ~2,012 GDD — county provides 2,590 GDD Good fit

Salsify Planting Timeline โ€” Kittitas County, WA

Salsify Planting Calendar

Activity When Date Range
Direct Sow April 23 Apr 23 โ€“ May 14
Fall Sowing July 24 Jul 24 โ€“ Aug 7
Harvest August 6 Aug 6 โ€“ Sep 17

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

Month-by-Month Timeline

MonthActivities
January โ€”
February โ€”
March โ€”
April Direct Sow
May Direct Sow
June โ€”
July Fall Sowing
August Fall Sowing 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 6a

Growing Season

148 days

Growing Tips for Kittitas 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 Kittitas County, WA?

Kittitas County is in Zone 6a with an average last frost of May 7. Plan your Salsify planting based on this frost date โ€” see the calendar above for exact timing.

What planting zone is Kittitas County, WA?

Kittitas County, Washington is in USDA Hardiness Zone 6a. The average last spring frost is May 7 and first fall frost is October 2.

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Plan Your Garden with Confidence

Get our free Garden Planner โ€” designed to help Kittitas County gardeners in Zone 6a 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 Kittitas County, WA. Local conditions may vary. Last updated: April 2026.