When to Plant Daikon in Smith County, TN
Daikon is a large, mild Japanese radish that can grow over a foot long. It is excellent for pickling, stir-fries, and as a soil-breaking cover crop.
Smith County, Tennessee is in USDA Zone 7a. The average last spring frost is April 10 and the first fall frost is October 28, giving you a growing season of approximately 201 days.
At an elevation of 3,829 feet, Smith County receives approximately 41.3 inches of rainfall annually with predominantly silt loam soil. Summer highs average 94°F, providing good warmth for Daikon during the growing season.
Smith County Soil Profile
Soil Type
Silt Loam
Soil pH
5.5-7
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
Daikon Planting Timeline — Smith County, TN
Daikon Planting Calendar
| Activity | When | Date Range |
|---|---|---|
| Direct Sow | March 27 | Mar 27 – Apr 17 |
| Fall Sowing | August 19 | Aug 19 – Sep 2 |
| Harvest | May 22 | May 22 – Jun 19 |
Plant 0.5" deep · 6" apart · Rows 12" apart
Month-by-Month Timeline
| Month | Activities |
|---|---|
| January | — |
| February | — |
| March | Direct Sow |
| April | Direct Sow |
| May | Harvest |
| June | Harvest |
| July | — |
| August | Fall Sowing |
| September | Fall Sowing |
| October | — |
| November | — |
| December | — |
Growing Conditions
Sun
Full Sun (6-8+ hours)
Water
Moderate — regular watering
Days to Maturity
50–70 days
Soil pH
5.8 – 7
USDA Zone
Zone 7a
Growing Season
201 days
Growing Tips for Smith County
Direct sow in late summer for fall harvest. Loosen soil deeply before planting. Thin seedlings to 6 inches apart. Harvest before hard freeze as exposed shoulders may crack.
Companion Planting
Good Companions
Avoid Planting Near
Level Up Your Garden
Daikon in Other Locations
Frequently Asked Questions
When should I plant Daikon in Smith County, TN?
Smith County is in Zone 7a with an average last frost of April 10. Plan your Daikon planting based on this frost date — see the calendar above for exact timing.
What planting zone is Smith County, TN?
Smith County, Tennessee is in USDA Hardiness Zone 7a. The average last spring frost is April 10 and first fall frost is October 28.
Plan Your Garden with Confidence
Get our free Garden Planner — designed to help Smith County gardeners in Zone 7a organize planting dates, track what's growing, and never miss a planting window.
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