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When to Plant Currants in Washington County, ID

Currants are small, tart berries that grow on attractive shrubs in red, white, and black varieties. They are prized for jams, jellies, and liqueurs.

Washington County, Idaho is in USDA Zone 6a. The average last spring frost is May 9 and the first fall frost is October 1, giving you a growing season of approximately 145 days.

At an elevation of 4,048 feet, Washington County receives approximately 17.9 inches of rainfall annually with predominantly loam soil. Summer highs average 85ยฐF, providing good warmth for Currants during the growing season. With low rainfall, drip irrigation is essential for growing Currants successfully. Mulch heavily to conserve soil moisture.

Washington County, ID (Zone 6a) Short season
145 days
Last Spring Frost May 9
145 growing days
First Fall Frost October 1

Washington County Soil Profile

Soil Type

Loam

Soil pH

6.2-7.8

Drainage

Well Drained

Plant Planting Risk Windows

Early Start (70% safe) ✓ Fits season
Transplant: May 22
Recommended (50%) ✓ Fits season
Transplant: May 30
Safe Start (90%) ✓ Fits season
Transplant: Jun 28

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
0.9″/week
Watering frequency 2-3 times/week
Season total 1,210 gal / 100 sq ft
Drought risk

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

Currants needs ~12,547 GDD — county provides 1,993 GDD May not mature

Currants Planting Timeline โ€” Washington County, ID

Currants Planting Calendar

Activity When Date Range
Transplant Outdoors May 30 May 30 โ€“ Jun 13

ยท 48" apart ยท Rows 72" apart

Month-by-Month Timeline

MonthActivities
January โ€”
February โ€”
March โ€”
April โ€”
May Transplant Outdoors
June Transplant Outdoors
July โ€”
August โ€”
September โ€”
October โ€”
November โ€”
December โ€”

Growing Conditions

Sun

Partial Shade (3-6 hours)

Water

Moderate โ€” regular watering

Days to Maturity

730โ€“1095 days

Soil pH

6 โ€“ 6.5

USDA Zone

Zone 6a

Growing Season

145 days

Growing Tips for Washington County

Plant in a sheltered location with morning sun. Prune out wood older than 3 years to encourage new fruiting wood. Mulch heavily to keep roots cool and moist.

Companion Planting

Good Companions

Level Up Your Garden

Frequently Asked Questions

When should I plant Currants in Washington County, ID?

Washington County is in Zone 6a with an average last frost of May 9. Plan your Currants planting based on this frost date โ€” see the calendar above for exact timing.

What planting zone is Washington County, ID?

Washington County, Idaho is in USDA Hardiness Zone 6a. The average last spring frost is May 9 and first fall frost is October 1.

๐ŸŒฑ

Plan Your Garden with Confidence

Get our free Garden Planner โ€” designed to help Washington 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 Washington County, ID. Local conditions may vary. Last updated: April 2026.