Spring Hill, TN planting zone & frost dates

Spring Hill is in USDA hardiness zone 7b. The last spring frost usually comes around April 3 and the first fall frost around November 1, for a growing season of about 211 days.

USDA hardiness zone7bavg. extreme winter low 5°F to 10°F

Average last spring frostApril 390% chance of no frost after April 22

Average first fall frostNovember 110% chance of frost by October 20

Growing season211 daysfrost-free days in an average year

Planting calendar for Spring Hill

Dates are counted from the average last spring frost (April 3) using the typical timing recommended by U.S. extension services. Warm-season crops go out only after the danger of frost has passed and the soil has warmed.

Crop	When
Tomatoes	Start seeds indoors: Feb 6 – Feb 20 Transplant outdoors: Apr 10 – Apr 17
Peppers	Start seeds indoors: Jan 23 – Feb 6 Transplant outdoors: Apr 17 – Apr 24
Eggplant	Start seeds indoors: Jan 23 – Feb 6 Transplant outdoors: Apr 17 – Apr 24
Broccoli	Start seeds indoors: Jan 23 – Feb 6 Transplant outdoors: Mar 6 – Mar 20
Cabbage	Start seeds indoors: Jan 23 – Feb 6 Transplant outdoors: Mar 6 – Mar 20
Onions (sets)	Plant outdoors: Mar 6 – Mar 20
Peas	Sow outdoors: Feb 20 – Mar 6
Spinach	Sow outdoors: Feb 20 – Mar 6
Lettuce	Sow outdoors: Mar 6 – Mar 20
Carrots	Sow outdoors: Mar 6 – Mar 20
Potatoes	Plant outdoors: Mar 6 – Mar 20
Beans	Sow outdoors: Apr 10 – Apr 17
Sweet corn	Sow outdoors: Apr 10 – Apr 17
Cucumbers	Sow outdoors: Apr 10 – Apr 17
Squash & zucchini	Sow outdoors: Apr 10 – Apr 17
Basil	Start seeds indoors: Feb 20 – Mar 6 Transplant outdoors: Apr 10 – Apr 17

Fall garden: cool-season crops like lettuce, spinach and kale can be sown again around Sep 6 (8 weeks before the average first fall frost on Nov 1).

Useful for zone 7b gardens

Seed starting kit with dome — to start seeds indoors before the last frost
LED grow light for seedlings — stops leggy seedlings
Frost cloth / plant covers — for late spring and early fall frosts
Soil thermometer — warm-season crops need soil above 60°F

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Frost risk in detail

	90% chance	50% chance	10% chance
Last 32°F frost in spring is after	Mar 17	Apr 3	Apr 22
First 32°F frost in fall is before	Nov 15	Nov 1	Oct 20

How to read it: in spring there is a 10% chance of a frost after April 22, so that is a safe date for tender plants. In fall there is a 10% chance of frost before October 20. A hard freeze (28°F) usually ends around March 23.

Hardiness zone by ZIP code in Spring Hill

37174 zone 7b

Nearby cities

Columbia zone 7b, last frost Apr 10
Franklin zone 7b, last frost Apr 3
Brentwood zone 7b, last frost Apr 15
Lewisburg zone 7b, last frost Apr 14
La Vergne zone 7b, last frost Apr 13
Nashville zone 7b, last frost Apr 1
Smyrna zone 7b, last frost Apr 13
Shelbyville zone 7b, last frost Apr 7

All cities in Tennessee → · Other zone 7b cities →

Questions

What growing zone is Spring Hill, TN?

Spring Hill is in USDA Plant Hardiness Zone 7b (average extreme winter low 5°F to 10°F), according to the USDA 2023 map.

When is the last frost in Spring Hill?

The average last spring frost (32°F) in Spring Hill is April 3. There is still a 10% chance of frost until April 22.

When can I plant tomatoes in Spring Hill?

Transplant tomatoes outdoors 1–2 weeks after the average last frost: around Apr 10 – Apr 17. Start seeds indoors 6–8 weeks before the last frost.

Frost dates: NOAA U.S. Climate Normals 1991–2020, station Thompson Stn, TN (USC00408953), 1.4 km (0.9 mi) from the city center, elevation 236 m, based on 14 years of records. Hardiness zone: USDA Plant Hardiness Zone Map 2023 for the ZIP code nearest to the city center. Microclimates (valleys, hills, cities, coasts) can be warmer or colder: check the local forecast before planting. How we calculate the data.