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Zone 6A — September

What to Plant in September in Zone 6A

September in Zone 6A: 0 crops to start indoors, 0 to plant or direct sow outside, and 138 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
0 Plant Outside
138 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 September

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

Plant Outside in September

Nothing to plant or sow outside in September for Zone 6A.
Next window: October — 12 varieties, including Asian Tempest Garlic, Chengdu Garlic, Chesnok Red Garlic.

Harvest in September

Plant Type Planted / Sown Harvest Window
Chayote squash vegetable May 13 Sep 10 – Oct 10
Mammoth Sandwich Island Salsify root vegetable May 6 Sep 3
Tepin Hot Peppers pepper May 13 Sep 10 – Oct 8 (before frost)
Alaska Early Pea (fall planting) legume Jul 20 Sep 15
All Year Round Cauliflower (fall planting) brassica Jul 20 Sep 23
America Spinach (fall planting) lettuce Jul 20 Sep 13
Black Seeded Simpson Lettuce (fall planting) lettuce Jul 20 Sep 4
Blonde de Paris Lettuce (fall planting) lettuce Jul 20 Sep 18
Bloomsdale Longstanding Spinach (fall planting) lettuce Jul 20 Sep 10
Blue Curled Scotch Kale (fall planting) lettuce Jul 20 Sep 18
Bok Choy (fall planting) lettuce Jul 20 Sep 18
Boltardy Beets (fall planting) root vegetable Jul 20 Sep 18
Bouquet Dill (fall planting) herb Jul 20 Sep 23
Broadleaf Classic Endive (fall planting) lettuce Jul 20 Sep 18
Broccolini (fall planting) brassica Jul 20 Sep 18
Bull's Blood Beets (fall planting) root vegetable Jul 20 Sep 13
Burgundy Boston Lettuce (fall planting) lettuce Jul 20 Sep 13
Buttercrunch Lettuce (fall planting) lettuce Jul 20 Sep 13
Butterhead Lettuce (fall planting) lettuce Jul 20 Sep 23
Calabrese Broccoli (fall planting) brassica Jul 20 Sep 23
Calendula (fall planting) flower Jul 20 Sep 18
California Bluebell (fall planting) flower Jul 20 Sep 23
Calypso Cilantro (fall planting) herb Jul 20 Sep 13
Canary Yellow Swiss Chard (fall planting) lettuce Jul 20 Sep 18
Cascadia Sugar Snap Pea (fall planting) legume Jul 20 Sep 18
Catalogna Chicory (fall planting) lettuce Jul 20 Sep 13
Chantenay Carrots (fall planting) root vegetable Jul 20 Sep 28
Charleston Wakefield Cabbage (fall planting) brassica Jul 20 Sep 28
Chervil (fall planting) herb Jul 20 Sep 3
Chinese Broccoli (Gai Lan) (fall planting) brassica Jul 20 Sep 8
Chioggia Beet (fall planting) root vegetable Jul 20 Sep 13
Copenhagen Cabbage (fall planting) brassica Jul 20 Sep 23
Crimson Forest Bunching Onions (fall planting) allium Jul 20 Sep 18
Crosby's Egyptian Beets (fall planting) root vegetable Jul 20 Sep 18
Curly Kale (fall planting) lettuce Jul 20 Sep 23
Cylindra Beets (fall planting) root vegetable Jul 20 Sep 18
Dark Green Romaine Lettuce (fall planting) lettuce Jul 20 Sep 28
Delicatesse Blue Kohlrabi (fall planting) brassica Jul 20 Sep 18
Delicatesse White Kohlrabi (fall planting) brassica Jul 20 Sep 18
Detroit Dark Red Beet (fall planting) root vegetable Jul 20 Sep 18
Di Cicco Broccoli (fall planting) brassica Jul 20 Sep 6
Dill (fall planting) herb Jul 20 Sep 13
Dukat Dill (fall planting) herb Jul 20 Sep 8
Dutch Lamb's Lettuce (fall planting) lettuce Jul 20 Sep 8
Dwarf Siberian Kale (fall planting) lettuce Jul 20 Sep 13
Early Purple Broccoli (fall planting) brassica Jul 20 Sep 23
Early Wonder Beets (fall planting) root vegetable Jul 20 Sep 8
Endive / Escarole (fall planting) lettuce Jul 20 Sep 23
Evergreen Bunching Onions (fall planting) allium Jul 20 Sep 23
Fairy Dwarf Mix Candytuft Flowers (fall planting) flower Jul 20 Sep 13
Fenugreek (fall planting) herb Jul 20 Sep 8
Florida Broadleaf Mustard (fall planting) lettuce Jul 20 Sep 8
Fordhook Giant Swiss Chard (fall planting) lettuce Jul 20 Sep 13
French Lamb's Lettuce (fall planting) lettuce Jul 20 Sep 8
German Chamomile (fall planting) herb Jul 20 Sep 23
Giant Red Mustard (fall planting) lettuce Jul 20 Sep 3
Golden Acre Cabbage (fall planting) brassica Jul 20 Sep 23
Golden Beet (fall planting) root vegetable Jul 20 Sep 23
Golden Detroit Beets (fall planting) root vegetable Jul 20 Sep 18
Golden Globe Turnips (fall planting) root vegetable Jul 20 Sep 8
Green Arrow Pea (fall planting) legume Jul 20 Sep 28
Green Ice Lettuce (fall planting) lettuce Jul 20 Sep 3
Green Mountain Celtuce (fall planting) lettuce Jul 20 Sep 8
Green Wave Mustard (fall planting) lettuce Jul 20 Sep 3
Hot Pink Swiss Chard (fall planting) lettuce Jul 20 Sep 18
Igloo Cauliflower (fall planting) brassica Jul 20 Sep 28
Kagraner Sommer Lettuce (fall planting) lettuce Jul 20 Sep 16
Kuroda Carrots (fall planting) root vegetable Jul 20 Sep 28
Lacinato Kale (fall planting) lettuce Jul 20 Sep 23
Lacy Phacelia Flowers (fall planting) flower Jul 20 Sep 18
Leaf Lettuce Mix (fall planting) lettuce Jul 20 Sep 13
Little Fingers Carrots (fall planting) root vegetable Jul 20 Sep 13
Little Gem Lettuce (fall planting) lettuce Jul 20 Sep 14
Little Marvel Pea (fall planting) legume Jul 20 Sep 21
Lollo Bionda Lettuce (fall planting) lettuce Jul 20 Sep 18
Lollo Rossa Lettuce (fall planting) lettuce Jul 20 Sep 14
Love-in-a-Mist Flowers (fall planting) flower Jul 20 Sep 28
Lunar White Carrots (fall planting) root vegetable Jul 20 Sep 18
Magenta Sunset Swiss Chard (fall planting) lettuce Jul 20 Sep 18
Mammoth Dill (fall planting) herb Jul 20 Sep 23
Marvel of Four Seasons Lettuce (fall planting) lettuce Jul 20 Sep 18
Matador Viking Spinach (fall planting) lettuce Jul 20 Sep 6
Michihili Cabbage (fall planting) brassica Jul 20 Sep 28
Minowase Daikon Radish (fall planting) root vegetable Jul 20 Sep 13
Mizuna (fall planting) lettuce Jul 20 Sep 8
Monstrueux de Viroflay Spinach (fall planting) lettuce Jul 20 Sep 8
Mustard Greens (fall planting) lettuce Jul 20 Sep 8
Napa Cabbage (fall planting) brassica Jul 20 Sep 28
Noble Giant Spinach (fall planting) lettuce Jul 20 Sep 8
Nutri-Red Carrots (fall planting) root vegetable Jul 20 Sep 28
Old Fashion Mustard (fall planting) lettuce Jul 20 Sep 8
Orange Swiss Chard (fall planting) lettuce Jul 20 Sep 13
Oregon Giant Snow Pea (fall planting) legume Jul 20 Sep 18
Oregon Sugar Pod Snow Pea (fall planting) legume Jul 20 Sep 26
Paris Market Carrots (fall planting) root vegetable Jul 20 Sep 23
Phacelia cover crop and bee forage (fall planting) cover crop Jul 20 Sep 18
Premier Kale (fall planting) lettuce Jul 20 Sep 18
Progress No. 9 Shelling Pea (fall planting) legume Jul 20 Sep 20
Purple Top White Globe Turnip (fall planting) root vegetable Jul 20 Sep 8
Rainbow Mix Swiss Chard (fall planting) lettuce Jul 20 Sep 18
Rapeseed Cover Crop (fall planting) cover crop Jul 20 Sep 28
Rapini Broccoli Raab (fall planting) brassica Jul 20 Sep 23
Red Leaf Lettuce (fall planting) lettuce Jul 20 Sep 13
Red Orach (fall planting) lettuce Jul 20 Sep 3
Red Romaine Lettuce (fall planting) lettuce Jul 20 Sep 28
Red Russian Kale (fall planting) lettuce Jul 20 Sep 8
Royal Carpet Alyssum Flowers (fall planting) flower Jul 20 Sep 18
Ruby Red Swiss Chard (fall planting) lettuce Jul 20 Sep 18
Salad Bowl Green Lettuce (fall planting) lettuce Jul 20 Sep 8
Scarlet Flax Flowers (fall planting) flower Jul 20 Sep 28
Shelling Pea (fall planting) legume Jul 20 Sep 28
Shungiku (Edible Chrysanthemum) (fall planting) lettuce Jul 20 Sep 13
Snow Crown Cauliflower (fall planting) brassica Jul 20 Sep 18
Snow Pea (fall planting) legume Jul 20 Sep 28
Snowball Self-Blanche Cauliflower (fall planting) brassica Jul 20 Sep 23
St. Valery Carrots (fall planting) root vegetable Jul 20 Sep 28
Sugar Ann Snap Pea (fall planting) legume Jul 20 Sep 13
Summer Bibb Lettuce (fall planting) lettuce Jul 20 Sep 18
Swiss Chard (fall planting) lettuce Jul 20 Sep 18
Tango Lettuce (fall planting) lettuce Jul 20 Sep 4
Tatsoi (fall planting) lettuce Jul 20 Sep 3
Tendergreen Mustard (fall planting) lettuce Jul 20 Sep 8
Tendersweet Carrots (fall planting) root vegetable Jul 20 Sep 28
Tom Thumb Lettuce (fall planting) lettuce Jul 20 Sep 28
Très Fine Maraîchère Frisée (fall planting) lettuce Jul 20 Sep 18
Vates Kale (fall planting) lettuce Jul 20 Sep 13
Vienna Purple Kohlrabi (fall planting) brassica Jul 20 Sep 23
Vienna White Kohlrabi (fall planting) brassica Jul 20 Sep 13
Viola and pansy edible flowers (fall planting) flower Jul 20 Sep 28
Violetta Purple Cauliflower (fall planting) brassica Jul 20 Sep 23
Wando Pea (fall planting) legume Jul 20 Sep 26
Watermelon Radishes (fall planting) root vegetable Jul 20 Sep 23
White Boston Lettuce (fall planting) lettuce Jul 20 Sep 8
White Detroit Beets (fall planting) root vegetable Jul 20 Sep 18
White Lisbon Bunching Onions (fall planting) allium Jul 20 Sep 18
Winner Kohlrabi (fall planting) brassica Jul 20 Sep 8
Winter Density Lettuce (fall planting) lettuce Jul 20 Sep 18
Winter Giant Spinach (fall planting) lettuce Jul 20 Sep 8

Key Tasks for September in Zone 6A

  1. 1 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
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