Tennessee is located in U.S. Department of Agriculture Plant Hardiness Zones 6 and 7 , where temperature may drop to -10 in the winters . Much of the state is buffer by the Appalachian wad . gardener in this domain may have to content with discrepant weather as cold , arctic air battles with affectionate , moist gentle wind from the Gulf of Mexico . There is a small pocket at the base of the Appalachians , including Knoxville , that has more consistent conditions and better opportunity for gardening .

Vegetables grow well throughout the state during the spring , summer and declension . When to embed depends largely on positioning , as most vegetable seeded player should be planted after last hoar and harvested before the first frost .

Asparagus

A perennial veg , asparagus exact two to three years to reach full sizing and crop , but will produce veggie annually , so choose a permanent spot for your plants . When first implant in Tennessee , seedlings should be establish in wintertime in milder regions and bounce in inhuman areas , and plants should be ready for harvest between April and July . Asparagus should be plant in 6 - inch to 8 - column inch column inch deep trench , filled with nutrient - robust soil and get peck of water supply to keep the roots wet .

Asparagus should be set in full sunshine and may be used as a back delimitation in flower or veggie gardens or along a fencing .

Radish

Considered one of the easy plants to maturate , radishes are also one of the fastest - grow . Mature vegetables may be glean as small as three weeks after sow in seeds . In Tennessee , radish should be engraft as soon as the priming is executable and reap before the warm summer , as heating system will cause the plants to go to seminal fluid .

Radishes should be constitute in moist , nutrient - rich soil and will thrive in full sun to light shade . These plants also require loose grease , so the roots will have room to grow and have a smooth tegument .

Spinach

A unspoiled fall crop in Tennessee , spinach flourish in cool weather and moist soil . Spinach should be planted after the heat of the summer , commonly between Aug. 15 to Sept. 15 , in most of the state . This plant will develop leafy greens that may be quick to glean in as few as six weeks after sowing germ .

prickly-seeded spinach flora thrive in organically copious , well - draining soil and should be planted in full sun .

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