my LocalPlanting

When to Plant Ginger in Idaho

🌱

Start Seeds Indoors

Wednesday, February 4, 2026

Transplant outdoors: Wednesday, May 13, 2026

State

Idaho

USDA Zones

4a, 4b, 5a, 5b, 6a, 6b, 7a, 7b

Avg Last Frost

Wednesday, April 15, 2026

Cities Covered

264

Idaho Planting Schedule by Zone

Idaho spans 8 zones — find yours below for the most accurate dates.

Zone Last Frost Start Indoors Transplant
4a Friday, May 15, 2026 Friday, March 6, 2026 Friday, June 12, 2026
4b Tuesday, May 5, 2026 Tuesday, February 24, 2026 Tuesday, June 2, 2026
5a Sunday, May 10, 2026 Sunday, March 1, 2026 Sunday, June 7, 2026
5b Saturday, April 25, 2026 Saturday, February 14, 2026 Saturday, May 23, 2026
6a Monday, April 20, 2026 Monday, February 9, 2026 Monday, May 18, 2026
6b Wednesday, April 15, 2026 Wednesday, February 4, 2026 Wednesday, May 13, 2026
7a Friday, April 10, 2026 Friday, January 30, 2026 Friday, May 8, 2026
7b Sunday, April 5, 2026 Sunday, January 25, 2026 Sunday, May 3, 2026

Dates based on average last frost. Check your local forecast before planting.

🌿 About Ginger

Scientific Name Zingiber officinale
Days to Maturity 270 days
Plant Type Tropical Perennial
Sun Partial Shade (3-5 hours)
Water Moderate-High (consistent moisture)
Spacing 18" apart

🤝 Companion Plants for Ginger

Good Companions

PepperEggplantTomato
See the full companion planting guide for Ginger →

Growing Ginger in Idaho: Complete Guide

Ginger (Zingiber officinale) is a warm-season crop that needs a head start indoors before Idaho's last frost. Most Idaho gardeners begin seeds indoors around Wednesday, February 4, 2026 and move transplants outside around Wednesday, May 13, 2026, after the risk of frost has passed.

Because Idaho stretches across 8 USDA hardiness zones (4a, 4b, 5a, 5b, 6a, 6b, 7a, 7b), planting windows can shift by as much as six to eight weeks from one end of the state to the other. Gardeners in the warmer southern zones can start earlier, while those in cooler northern zones should wait until the zone table above shows their last frost has passed.

With 270 days to maturity, Ginger needs the indoor head start that Idaho's growing season requires. Starting indoors ensures you have strong transplants ready the moment outdoor conditions are right.

Ginger requires partial shade (3-5 hours) and moderate-high (consistent moisture) moisture. Most of Idaho receives adequate sunlight during the growing season, though gardeners in humid eastern regions should watch for fungal issues and ensure good air circulation.

For the most precise planting dates tailored to your exact location, enter your ZIP code on our planting calendar or use the zone table above to find the schedule for your area of Idaho.

Frequently Asked Questions

When should I plant Ginger in Idaho?

In Idaho, start Ginger seeds indoors around Wednesday, February 4, 2026 and transplant outdoors around Wednesday, May 13, 2026 after your last frost. Idaho spans zones 4a–7b, so dates shift by 1–4 weeks depending on where you live.

What is the last frost date in Idaho?

Idaho spans 8 USDA zones (4a, 4b, 5a, 5b, 6a, 6b, 7a, 7b), so last frost dates vary by region. Island Park, Macks Inn (4a) sees frost until around Friday, May 15, 2026, while Lewiston, Juliaetta, Lapwai (7b) is frost-free much earlier.

How long does Ginger take to grow in Idaho?

Ginger takes about 270 days from transplant (or direct sow) to harvest. Starting seeds indoors in Idaho gives you a head start so plants are ready to go out after the last frost.

What USDA zones does Idaho cover for Ginger?

Idaho includes zones 4a, 4b, 5a, 5b, 6a, 6b, 7a, 7b. Ginger grows well across all of these zones with adjusted timing — use the zone table above to find the right dates for your part of the state.

Find Precise Dates for Your City

Select a city for exact planting dates based on local frost records.

Other Plants for Idaho

When to Plant Ginger in Other States