What Can Grow in Nampa, ID

Nampa in the Treasure Valley shares Boise's excellent agricultural climate with rich irrigated soils.

Nampa, ID is in USDA Hardiness Zone 6b. The growing season lasts about 153 days, with last frost around April 20 and first fall frost around October 20. Top crops include tomatoes, onions, corn.

6bUSDA Zone
153 daysFrost-Free
April 20Last Frost
October 20First Frost
🌱 What Grows in Nampa
tomatoesonionscornbeanssquashpotatoes
💡 Planting Tips

Major agricultural area. Rich soils with irrigation. Excellent for commercial vegetable production.

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📍 Full Zone 6b Guide 🌎 Idaho Planting Guide

Frequently Asked Questions

Nampa, ID is in USDA Plant Hardiness Zone 6b. Nampa in the Treasure Valley shares Boise's excellent agricultural climate with rich irrigated soils.

The average last spring frost in Nampa is around April 20. The first fall frost typically arrives around October 20, giving a frost-free growing season of approximately 153 days.

Nampa's Zone 6b climate supports growing tomatoes, onions, corn, beans, squash, potatoes. Major agricultural area. Rich soils with irrigation. Excellent for commercial vegetable production.

In Nampa, start with cool-season crops like lettuce, spinach, and broccoli a few weeks before the last frost date of April 20. Warm-season crops like tomatoes and peppers should go in after all frost risk has passed.