What Can Grow in Knoxville, TN

Knoxville in the Tennessee Valley has excellent growing conditions influenced by Appalachian proximity.

Knoxville, TN is in USDA Hardiness Zone 6b. The growing season lasts about 185 days, with last frost around April 8 and first fall frost around October 20. Top crops include tomatoes, peppers, beans.

6bUSDA Zone
185 daysFrost-Free
April 8Last Frost
October 20First Frost
🌱 What Grows in Knoxville
tomatoespeppersbeanssweet cornapplessquash
💡 Planting Tips

Tennessee Valley location. Excellent apples in nearby mountains. Plant warm crops April 10.

🌱
Shop seeds matched to your zone Burpee, Park Seed, and more — curated for your growing conditions.
Shop Seeds →
🔗 More Resources
📍 Full Zone 6b Guide 🌎 Tennessee Planting Guide

Frequently Asked Questions

Knoxville, TN is in USDA Plant Hardiness Zone 6b. Knoxville in the Tennessee Valley has excellent growing conditions influenced by Appalachian proximity.

The average last spring frost in Knoxville is around April 8. The first fall frost typically arrives around October 20, giving a frost-free growing season of approximately 185 days.

Knoxville's Zone 6b climate supports growing tomatoes, peppers, beans, sweet corn, apples, squash. Tennessee Valley location. Excellent apples in nearby mountains. Plant warm crops April 10.

In Knoxville, start with cool-season crops like lettuce, spinach, and broccoli a few weeks before the last frost date of April 8. Warm-season crops like tomatoes and peppers should go in after all frost risk has passed.