When to Plant Broccoli in Claiborne County, TN
Broccoli is a nutrient-dense cool-season crop that produces large central heads followed by smaller side shoots. It is one of the most popular garden vegetables.
Claiborne County, Tennessee is in USDA Zone 6b. The average last spring frost is April 13 and the first fall frost is October 22, giving you a growing season of approximately 192 days.
At an elevation of 2,594 feet, Claiborne County receives approximately 43.4 inches of rainfall annually with predominantly silt loam soil. Summer highs average 91°F, providing good warmth for Broccoli during the growing season.
Claiborne County Soil Profile
Soil Type
Silt Loam
Soil pH
5.6-6.9
Drainage
Well Drained
Plant Planting Risk Windows
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
Broccoli Planting Timeline — Claiborne County, TN
Broccoli Planting Calendar
| Activity | When | Date Range |
|---|---|---|
| Start Indoors | March 9 | Mar 9 – Mar 23 |
| Transplant Outdoors | April 13 | Apr 13 – Apr 27 |
| Direct Sow | March 30 | Mar 30 – Apr 20 |
| Fall Sowing | August 13 | Aug 13 – Aug 27 |
| Harvest | June 15 | Jun 15 – Jul 27 |
Plant 1" deep · 15" apart · Rows 24" apart
Month-by-Month Timeline
| Month | Activities |
|---|---|
| January | — |
| February | — |
| March | Start Indoors Direct Sow |
| April | Transplant Outdoors Direct Sow |
| May | — |
| June | Harvest |
| July | Harvest |
| August | Fall Sowing |
| September | — |
| October | — |
| November | — |
| December | — |
Growing Conditions
Sun
Full Sun (6-8+ hours)
Water
Moderate — regular watering
Days to Maturity
60–90 days
Soil pH
6 – 7
USDA Zone
Zone 6b
Growing Season
192 days
Growing Tips for Claiborne County
Start seeds indoors 6-8 weeks before last frost. Provide consistent moisture to prevent hollow stems. Harvest heads before yellow flowers appear.
Companion Planting
Good Companions
Avoid Planting Near
Level Up Your Garden
Isolate 1/2 mile from other brassicas. Biennial — must overwinter roots.
Broccoli in Other Locations
Frequently Asked Questions
When should I plant Broccoli in Claiborne County, TN?
Claiborne County is in Zone 6b with an average last frost of April 13. Plan your Broccoli planting based on this frost date — see the calendar above for exact timing.
What planting zone is Claiborne County, TN?
Claiborne County, Tennessee is in USDA Hardiness Zone 6b. The average last spring frost is April 13 and first fall frost is October 22.
Plan Your Garden with Confidence
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