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Zone 6A — August

What to Plant in August in Zone 6A

August in Zone 6A: 0 crops to start indoors, 1 to plant or direct sow outside, and 134 entering harvest window. Last frost averages April 29. Reference city: Columbus, OH.
Updated May 13, 2026 · Frost data from NOAA 1991-2020 Climate Normals
0 Start Indoors
1 Plant Outside
134 Harvest
Frost risk: Cleared

Frost season has cleared in Zone 6A. The last spring frost typically passed by April 29, and the very latest 10% chance closed by May 15. Tender crops are safe to plant out.

See full Zone 6A frost outlook

Start Indoors in August

Nothing to start seeds indoors in August for Zone 6A.
Next window: January — 3 varieties, including Green Onion, King Richard Leek, Leek.

Plant Outside in August

Plant Type Action Target Date Harvest Window
Sugar Snap Pea (fall planting) legume Direct Sow Aug 6 Oct 15

Harvest in August

Plant Type Planted / Sown Harvest Window
Brilliant Celeriac root vegetable Apr 29 Aug 17 – Aug 27
Grano Red Onions allium Apr 29 Aug 27
Grano White Onions allium Apr 29 Aug 27
Indian Spring Mix Hollyhock Flowers flower Apr 29 Aug 27 – Oct 8 (before frost)
Red Burgundy Onions allium Apr 29 Aug 17 – Aug 27
Southport Red Globe Onions allium Apr 29 Aug 27
Southport White Globe Onions allium Apr 29 Aug 27
Spanish Sweet White Onions allium Apr 29 Aug 17 – Aug 27
Summer Carnival Mix Hollyhock Flowers flower Apr 29 Aug 27 – Oct 8 (before frost)
Abe Lincoln Tomatoes tomato May 13 Aug 1 – Aug 11
Ace 55 Tomatoes tomato May 13 Aug 1 – Aug 6
Adirondack Blue Potato root vegetable May 6 Aug 1
Aji Amarillo Peppers pepper May 13 Aug 11 – Sep 10
Aji Dulce Peppers pepper May 13 Aug 11 – Aug 31
All Sweet Watermelon melon May 13 Aug 11 – Aug 16
Amarillo Oro Melon melon May 13 Aug 11
Anise herb May 6 Aug 14 – Sep 3
Atlantic Giant Pumpkin squash May 6 Aug 24
Aunt Ruby's German Green Tomatoes tomato May 13 Aug 1
Baby Blue Hubbard Winter Squash squash May 6 Aug 9
Banana Melon melon May 13 Aug 11
Beauregard Sweet Potato root vegetable May 6 Aug 4 – Aug 19
Beefsteak Tomatoes tomato May 13 Aug 1 – Aug 6
Bhut Jolokia Ghost Pepper pepper May 13 Aug 11 – Sep 10
Big Max Pumpkin squash May 6 Aug 29 – Sep 3
Big Rainbow Tomatoes tomato May 13 Aug 6 – Aug 16
Birds Eye Hot Peppers pepper May 13 Aug 21 – Aug 31
Black Diamond Watermelon melon May 13 Aug 11
Black From Tula Tomatoes tomato May 13 Aug 6
Bloody Butcher Corn vegetable May 13 Aug 21 – Aug 31
Brandywine Tomatoes tomato May 13 Aug 1 – Aug 11
Brussels Sprouts brassica May 13 Aug 6 – Aug 31
Burgess Buttercup Winter Squash squash May 6 Aug 9
Cal Sweet Watermelon melon May 13 Aug 6 – Aug 11
Carolina Cross Watermelon melon May 13 Aug 21
Carolina Reaper peppers pepper May 13 Aug 11 – Sep 10
Chocolate Habanero Hot Peppers pepper May 13 Aug 6 – Aug 26
Chocolate Stripes Tomatoes tomato May 13 Aug 1
Cinderella Pumpkin squash May 6 Aug 29
Classic Cumin herb May 6 Aug 14 – Sep 3
Congo Watermelon melon May 13 Aug 11 – Aug 16
Crimson Sweet Watermelon melon May 13 Aug 1 – Aug 11
Datil peppers pepper May 13 Aug 11 – Aug 31
Delica Kabocha Squash squash May 13 Aug 16 – Aug 31
Delicata Squash squash May 13 Aug 1 – Aug 21
Devils Tongue Yellow Hot Peppers pepper May 13 Aug 11 – Aug 31
Firecracker Hot Peppers pepper May 13 Aug 1 – Sep 10
Florida Giant Watermelon melon May 13 Aug 6
Florida Market Eggplant vegetable May 13 Aug 1 – Aug 11
French Fingerling Potato root vegetable May 6 Aug 7
Georgia Rattlesnake Watermelon melon May 13 Aug 11 – Aug 16
German Johnson Tomatoes tomato May 13 Aug 6
Golden Bantam Sweet Corn vegetable May 13 Aug 1 – Aug 6
Golden Hubbard Winter Squash squash May 6 Aug 14
Goldrush Potato root vegetable May 6 Aug 25 – Sep 3
Green Flesh Honeydew Melon melon May 13 Aug 6 – Aug 21
Green Hubbard Winter Squash squash May 6 Aug 24
Green Striped Cushaw Crookneck Winter Squash squash May 6 Aug 19
Habanero Pepper pepper May 20 Aug 18 – Sep 17
Hale's Best Jumbo Cantaloupe melon May 13 Aug 1 – Aug 11
Harris Model Parsnips root vegetable May 6 Aug 29 – Sep 3
Heart of Gold Cantaloupe Melon melon May 13 Aug 6 – Aug 21
Heirloom Red Kuri Squash squash May 6 Aug 4 – Aug 14
Hillbilly Tomatoes tomato May 13 Aug 6
Holiday Marbles Hot Peppers pepper May 13 Aug 11 – Aug 31
Homestead Tomatoes tomato May 13 Aug 1 – Aug 6
Honey Rock Cantaloupe Melon melon May 13 Aug 6 – Aug 21
Honeydew Melon melon May 13 Aug 21 – Sep 5
Jack Be Little Pumpkin squash May 6 Aug 9
Jack O'Lantern Pumpkin squash May 13 Aug 11 – Aug 31
Jaune Flamme Tomatoes tomato May 13 Aug 1
Jimmy Nardello Peppers pepper May 20 Aug 8 – Aug 18
Jubilee Watermelon melon May 13 Aug 11 – Aug 16
Kennebec Potato root vegetable May 6 Aug 24 – Sep 18
King of the Garden Pole Lima Bean legume May 6 Aug 2 – Aug 9
Lemon Habanero Hot Peppers pepper May 13 Aug 6 – Aug 26
Long Island Cheese Winter Squash squash May 6 Aug 22
Luffa gourds vegetable May 13 Aug 21 – Sep 10
Moon & Stars Red-Flesh Watermelon melon May 13 Aug 11 – Aug 21
Moon & Stars Yellow-Flesh Watermelon melon May 13 Aug 11 – Aug 21
Mortgage Lifter Tomatoes tomato May 13 Aug 1 – Aug 6
Mr. Stripey Tomatoes tomato May 13 Aug 1
NuMex Twilight Hot Peppers pepper May 13 Aug 11 – Sep 10
Orange Flesh Honeydew Melon melon May 13 Aug 6 – Aug 21
Orange Habanero Hot Peppers pepper May 13 Aug 6 – Aug 26
Pacific Giant Pumpkin squash May 6 Aug 29 – Sep 8
Paris Yellow Pumpkin squash May 6 Aug 14
Parsnip root vegetable May 6 Aug 14 – Sep 13
Pimento Sweet Peppers pepper May 13 Aug 6 – Aug 11
Pink Banana Jumbo Winter Squash squash May 6 Aug 14 – Aug 24
Pink Delicious Tomatoes tomato May 13 Aug 1 – Aug 5
Pink Oxheart Tomatoes tomato May 13 Aug 1 – Aug 11
Planters Jumbo Cantaloupe Melon melon May 13 Aug 6
Ponderosa Red Beefsteak Tomatoes tomato May 13 Aug 1 – Aug 11
Pretty Purple Hot Peppers pepper May 13 Aug 11 – Sep 10
Purple Tiger Hot Peppers pepper May 13 Aug 11 – Aug 21
Queensland Blue Winter Squash squash May 6 Aug 14 – Sep 3
Rainbow Corn vegetable May 6 Aug 19 – Aug 29
Red Caribbean Habanero Hot Peppers pepper May 13 Aug 6 – Aug 26
Red Pontiac Potato root vegetable May 6 Aug 4 – Aug 24
Red Scotch Bonnet Pepper pepper May 13 Aug 16 – Sep 10
Round Mauve Eggplant vegetable May 13 Aug 1 – Aug 11
Spaghetti Squash squash May 13 Aug 9 – Aug 21
Sugar Pie Pumpkin squash May 13 Aug 11 – Aug 31
Sunshine Kabocha Squash squash May 6 Aug 9 – Aug 14
Tabasco Hot Peppers pepper May 13 Aug 1 – Aug 11
Table Queen Acorn Squash squash May 13 Aug 1 – Aug 21
Tall Utah 52-70 Celery vegetable May 13 Aug 21 – Sep 20
Tendercrisp Celery vegetable May 6 Aug 4 – Aug 19
Tendersweet Orange Watermelon melon May 13 Aug 11 – Aug 16
Tom Watson Watermelon melon May 13 Aug 6
Trinidad Moruga Scorpion peppers pepper May 13 Aug 1 – Sep 10
Turkish Orange Eggplant vegetable May 13 Aug 6 – Aug 11
VR Moscow Tomatoes tomato May 13 Aug 1 – Aug 11
Waltham Butternut Squash squash May 13 Aug 21 – Sep 10
White Cushaw Crookneck Winter Squash squash May 6 Aug 14
Yellow Scotch Bonnet Hot Peppers pepper May 13 Aug 11 – Sep 10
Astro Arugula (fall planting) lettuce Jul 20 Aug 29
Beauty Pink Radishes (fall planting) root vegetable Jul 20 Aug 15
Beauty Purple Radishes (fall planting) root vegetable Jul 20 Aug 19
Beauty White Radishes (fall planting) root vegetable Jul 20 Aug 29
Black Oil Sunflower Microgreens (fall planting) microgreen Jul 20 Aug 1
Champion Radishes (fall planting) root vegetable Jul 20 Aug 19
Cherry Belle Radish (fall planting) root vegetable Jul 20 Aug 14
Easter Egg Radishes (fall planting) root vegetable Jul 20 Aug 21
French Breakfast Radish (fall planting) root vegetable Jul 20 Aug 10
Hailstone Radishes (fall planting) root vegetable Jul 20 Aug 19
Mesclun Mix (fall planting) lettuce Jul 20 Aug 19
Purple Plum Radishes (fall planting) root vegetable Jul 20 Aug 19
Rambo Radish Microgreens (fall planting) microgreen Jul 20 Aug 4
Slow-Bolt (Slo-Bolt) Cilantro/Coriander (fall planting) herb Jul 20 Aug 29
Sparkler Radishes (fall planting) root vegetable Jul 20 Aug 19
Speckled Pea Shoot Microgreens (fall planting) microgreen Jul 20 Aug 3
White Icicle Radishes (fall planting) root vegetable Jul 20 Aug 19

Key Tasks for August in Zone 6A

  1. 1 Direct sow seeds at the recommended depth and spacing. Keep the seedbed consistently moist until germination is complete.
  2. 2 Apply 2–3 inches of mulch around heat-sensitive crops to retain moisture and keep root zones cooler. Water deeply and less frequently rather than shallow daily watering.
  3. 3 Check soil moisture before watering — stick a finger 2 inches into the soil. Water only when the soil is dry at that depth. Consistent moisture is more important than frequency.
Back to full Zone 6A planting calendar
July August in Zone 6A September

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