Data: 2023 USDA zones (PRISM/OSU) · NOAA 1991–2020 normals · updated Oct 29, 2026

Planting zone for Brentwood, TN

Brentwood, TN is in USDA zone 7b across its 2 ZIP codes. The median last spring frost is April 15 and the first fall frost October 26.

Brentwood on the zone map

Outlined: its 1 ZIP code areas · tap the map for the zone at any spot · scroll or pinch to zoom

Not the official USDA Plant Hardiness Zone Map. Zones come from the 2023 USDA hardiness-zone data by the PRISM Group, Oregon State University; we re-mapped and recolored them. The official map is at planthardiness.ars.usda.gov.

Zone7b5 to 10 °F

ZIP codes2

Last frostApr 15

First frostOct 26

Growing season193 days

7b 2 ZIPs

Frost forecast — next 7 nights

live from the National Weather Service

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Forecast data: National Weather Service (api.weather.gov), public domain. This is not a warning service — for official frost and freeze warnings see weather.gov.

Frost dates in Brentwood, TN

JanFebMarAprMayJunJulAugSepOctNovDec

Blue: frost possible · fading green: frost risk falling or rising (90% → 10%) · green: frost-free

Last spring frostApril 15median — 50% chance of a later frost

Safe for tender plantsMay 4only 10% chance of frost after

First fall frostOctober 26median — 10% chance by Oct 13

Growing season193 daysfrost-free, median

A hard freeze (28 °F) usually ends around April 2 and returns around November 3.

From the NOAA station Brentwood, TN, elevation 709 ft. NOAA NCEI U.S. Climate Normals 1991–2020, 32 °F threshold. Low spots and valleys can freeze later in spring than the station.

When to plant vegetables in Brentwood

JanFebMarAprMayJunJulAugSepOctNovDec

PeasSow outdoors · Mar 4 – Mar 18

SpinachSow outdoors · Mar 4 – Mar 25

Broccoli, cabbageStart indoors · Feb 4 – Feb 18

Broccoli, cabbageTransplant · Mar 25 – Apr 8

Onion setsPlant outdoors · Mar 18 – Apr 1

PotatoesPlant outdoors · Mar 25 – Apr 8

LettuceSow outdoors · Mar 18 – Apr 1

Carrots, beetsSow outdoors · Mar 25 – Apr 8

TomatoesStart indoors · Feb 18 – Mar 4

TomatoesTransplant · Apr 22 – May 6

Peppers, eggplantStart indoors · Feb 4 – Feb 18

Peppers, eggplantTransplant · Apr 29 – May 13

BeansSow outdoors · Apr 22 – May 6

Sweet cornSow outdoors · Apr 22 – May 6

Cucumbers, squashSow outdoors · Apr 22 – May 6

Fall lettuce, spinachSow outdoors · Aug 31 – Sep 14

GarlicPlant cloves · Oct 12 – Nov 16

Start seeds indoorsSow or plant outdoorsFall plantingMedian last & first frost

Counted from the median last spring frost (Apr 15) and first fall frost (Oct 26) with the rules of thumb U.S. extension services publish. Cool-season crops take a light frost; warm-season crops do best once the soil is above about 60 °F.

When spring arrived in 2026

In 2026, spring leaf-out near 37024 came on Feb 20 — 7 days earlier than the 1991–2020 average (Feb 27).

average
Feb 272026
Feb 20

JanFebMarAprMayJun

The Spring Index marks the day when accumulated warmth is enough for lilac and honeysuckle to leaf out — a widely used signal that the growing season has started. Source: USA National Phenology Network, www.usanpn.org — Spring Indices, first leaf, 2026 (data as of 2026-09-08) and 30-year average 1991–2020 (CC BY 4.0).

Native plants for zone 7b in Tennessee

566 plants native to the lower 48 states, recorded in Tennessee, and rated by the USDA to survive 5 °F or colder — the bottom of zone 7b. Each links to its USDA PLANTS profile.

Source: USDA, NRCS. 2026. The PLANTS Database (plants.usda.gov), National Plant Data Team — state distribution, native status and the “Temperature, Minimum” characteristic. Check light, moisture and soil needs before buying; local nurseries and your state native plant society can confirm what thrives in Brentwood, TN.

Soil in Brentwood, TN

The soil mapped at the center of ZIP 37024 is Hampshire — silt loam, well drained.

TextureSilt loama good balance for most vegetables

pH6.2slightly acidic; most vegetables like 6.0–7.0

DrainageWell drainednatural drainage class

Organic matter2%moderate

Hydrologic groupCwater soaks in slowly

Farmland classNot prime farmlandUSDA classification

Map unit: Hampshire silt loam, 5 to 12 percent slopes, eroded.

Soil Survey Staff, Natural Resources Conservation Service, USDA. Soil Survey Geographic (SSURGO) Database, via Soil Data Access, accessed 2026-10-29. The soil at the center point of ZIP 37024; soils change within a few hundred feet, so a home soil test (pH, nutrients) is still the best guide.

Climate in Brentwood, TN

Summer high90 °Faverage high, July

Winter low26 °Faverage low, January

Hot days51days a year at 90 °F or more

Freezing nights98nights a year at 32 °F or less

Growing degree days4,336base 50 °F — the season’s usable heat

Longest day14 h 36 mindaylight on June 21

Shortest day9 h 42 mindaylight on December 21

Onions to growIntermediateday-neutral types bulb best; long-day varieties may not bulb fully

Precipitation54.4 inper year, rain and melted snow

Average high and low, by month

Precipitation by month inches

NOAA NCEI U.S. Climate Normals 1991–2020 — temperature: Brentwood, TN (3 mi away); precipitation: Brentwood, TN (3 mi away). Daylight is calculated from latitude.

ZIP codes in Brentwood

Tennessee planting zones →

Questions about Brentwood

What planting zone is Brentwood, TN?

Brentwood, TN is in USDA hardiness zone 7b on the 2023 map (7b: 5 to 10 °F).

When is the last frost in Brentwood, TN?

The median last spring frost is April 15 and the median first fall frost is October 26 (NOAA 1991–2020 normals, Brentwood station).

When can I plant a garden in Brentwood, TN?

Cool-season crops like peas and spinach go in around Mar 4 – Mar 25; tomatoes, peppers, beans and squash after about Apr 22, once frost risk has passed.

What kind of onions grow in Brentwood, TN?

Intermediate onions: the longest day is 14 h 36 min, so day-neutral types bulb best; long-day varieties may not bulb fully.

How much rain and snow does Brentwood, TN get?

About 54.4 inches of precipitation a year (NOAA 1991–2020 normals).