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Zone 8B — September

What to Plant in September in Zone 8B

September in Zone 8B: 0 crops to start indoors, 155 to plant or direct sow outside, and 37 entering harvest window. Last frost averages March 20. Reference city: Houston, TX.
Updated May 13, 2026 · Frost data from NOAA 1991-2020 Climate Normals
0 Start Indoors
155 Plant Outside
37 Harvest
Frost risk: Cleared

Frost season has cleared in Zone 8B. The last spring frost typically passed by March 20, and the very latest 10% chance closed by April 8. Tender crops are safe to plant out.

See full Zone 8B frost outlook

Start Indoors in September

Nothing to start seeds indoors in September for Zone 8B.
Next window: November — 1 variety, including Texas 1015Y SuperSweet Onion.

Plant Outside in September

Plant Type Action Target Date Harvest Window
Alaska Early Pea (fall planting) legume Direct Sow Sep 15 Nov 11
All Year Round Cauliflower (fall planting) brassica Direct Sow Sep 15 Nov 19
All Year Round Lettuce (fall planting) lettuce Direct Sow Sep 15 Nov 27
America Spinach (fall planting) lettuce Direct Sow Sep 15 Nov 9
Astro Arugula (fall planting) lettuce Direct Sow Sep 15 Oct 25
Beauty Pink Radishes (fall planting) root vegetable Direct Sow Sep 15 Oct 11
Beauty Purple Radishes (fall planting) root vegetable Direct Sow Sep 15 Oct 15
Beauty White Radishes (fall planting) root vegetable Direct Sow Sep 15 Oct 25
Black Oil Sunflower Microgreens (fall planting) microgreen Direct Sow Sep 15 Sep 27
Black Seeded Simpson Lettuce (fall planting) lettuce Direct Sow Sep 15 Oct 31
Blonde de Paris Lettuce (fall planting) lettuce Direct Sow Sep 15 Nov 14
Bloomsdale Longstanding Spinach (fall planting) lettuce Direct Sow Sep 15 Nov 6
Blue Curled Scotch Kale (fall planting) lettuce Direct Sow Sep 15 Nov 14
Bok Choy (fall planting) lettuce Direct Sow Sep 15 Nov 14
Boltardy Beets (fall planting) root vegetable Direct Sow Sep 15 Nov 14
Bouquet Dill (fall planting) herb Direct Sow Sep 15 Nov 19
Broadleaf Classic Endive (fall planting) lettuce Direct Sow Sep 15 Nov 14
Broccolini (fall planting) brassica Direct Sow Sep 15 Nov 14
Bull's Blood Beets (fall planting) root vegetable Direct Sow Sep 15 Nov 9
Burgundy Boston Lettuce (fall planting) lettuce Direct Sow Sep 15 Nov 9
Buttercrunch Lettuce (fall planting) lettuce Direct Sow Sep 15 Nov 9
Butterhead Lettuce (fall planting) lettuce Direct Sow Sep 15 Nov 19
Calabrese Broccoli (fall planting) brassica Direct Sow Sep 15 Nov 19
Calendula (fall planting) flower Direct Sow Sep 15 Nov 14
California Bluebell (fall planting) flower Direct Sow Sep 15 Nov 19
Calypso Cilantro (fall planting) herb Direct Sow Sep 15 Nov 9
Canary Yellow Swiss Chard (fall planting) lettuce Direct Sow Sep 15 Nov 14
Cascadia Sugar Snap Pea (fall planting) legume Direct Sow Sep 15 Nov 14
Catalogna Chicory (fall planting) lettuce Direct Sow Sep 15 Nov 9
Champion Radishes (fall planting) root vegetable Direct Sow Sep 15 Oct 15
Chantenay Carrots (fall planting) root vegetable Direct Sow Sep 15 Nov 24
Charleston Wakefield Cabbage (fall planting) brassica Direct Sow Sep 15 Nov 24
Cherry Belle Radish (fall planting) root vegetable Direct Sow Sep 15 Oct 10
Chervil (fall planting) herb Direct Sow Sep 15 Oct 30
Chinese Broccoli (Gai Lan) (fall planting) brassica Direct Sow Sep 15 Nov 4
Chioggia Beet (fall planting) root vegetable Direct Sow Sep 15 Nov 9
Copenhagen Cabbage (fall planting) brassica Direct Sow Sep 15 Nov 19
Crimson Forest Bunching Onions (fall planting) allium Direct Sow Sep 15 Nov 14
Crosby's Egyptian Beets (fall planting) root vegetable Direct Sow Sep 15 Nov 14
Curly Kale (fall planting) lettuce Direct Sow Sep 15 Nov 19
Cylindra Beets (fall planting) root vegetable Direct Sow Sep 15 Nov 14
Dark Green Romaine Lettuce (fall planting) lettuce Direct Sow Sep 15 Nov 24
Delicatesse Blue Kohlrabi (fall planting) brassica Direct Sow Sep 15 Nov 14
Delicatesse White Kohlrabi (fall planting) brassica Direct Sow Sep 15 Nov 14
Detroit Dark Red Beet (fall planting) root vegetable Direct Sow Sep 15 Nov 14
Di Cicco Broccoli (fall planting) brassica Direct Sow Sep 15 Nov 2
Dill (fall planting) herb Direct Sow Sep 15 Nov 9
Dukat Dill (fall planting) herb Direct Sow Sep 15 Nov 4
Dutch Lamb's Lettuce (fall planting) lettuce Direct Sow Sep 15 Nov 4
Dwarf Siberian Kale (fall planting) lettuce Direct Sow Sep 15 Nov 9
Early Purple Broccoli (fall planting) brassica Direct Sow Sep 15 Nov 19
Early Wonder Beets (fall planting) root vegetable Direct Sow Sep 15 Nov 4
Easter Egg Radishes (fall planting) root vegetable Direct Sow Sep 15 Oct 17
Endive / Escarole (fall planting) lettuce Direct Sow Sep 15 Nov 19
Evergreen Bunching Onions (fall planting) allium Direct Sow Sep 15 Nov 19
Fairy Dwarf Mix Candytuft Flowers (fall planting) flower Direct Sow Sep 15 Nov 9
Fenugreek (fall planting) herb Direct Sow Sep 15 Nov 4
Florida Broadleaf Mustard (fall planting) lettuce Direct Sow Sep 15 Nov 4
Fordhook Giant Swiss Chard (fall planting) lettuce Direct Sow Sep 15 Nov 9
French Breakfast Radish (fall planting) root vegetable Direct Sow Sep 15 Oct 6
French Lamb's Lettuce (fall planting) lettuce Direct Sow Sep 15 Nov 4
German Chamomile (fall planting) herb Direct Sow Sep 15 Nov 19
Giant Red Mustard (fall planting) lettuce Direct Sow Sep 15 Oct 30
Golden Acre Cabbage (fall planting) brassica Direct Sow Sep 15 Nov 19
Golden Beet (fall planting) root vegetable Direct Sow Sep 15 Nov 19
Golden Detroit Beets (fall planting) root vegetable Direct Sow Sep 15 Nov 14
Golden Globe Turnips (fall planting) root vegetable Direct Sow Sep 15 Nov 4
Green Arrow Pea (fall planting) legume Direct Sow Sep 15 Nov 24
Green Ice Lettuce (fall planting) lettuce Direct Sow Sep 15 Oct 30
Green Mountain Celtuce (fall planting) lettuce Direct Sow Sep 15 Nov 4
Green Wave Mustard (fall planting) lettuce Direct Sow Sep 15 Oct 30
Hailstone Radishes (fall planting) root vegetable Direct Sow Sep 15 Oct 15
Hot Pink Swiss Chard (fall planting) lettuce Direct Sow Sep 15 Nov 14
Igloo Cauliflower (fall planting) brassica Direct Sow Sep 15 Nov 24
Kagraner Sommer Lettuce (fall planting) lettuce Direct Sow Sep 15 Nov 12
Kuroda Carrots (fall planting) root vegetable Direct Sow Sep 15 Nov 24
Lacinato Kale (fall planting) lettuce Direct Sow Sep 15 Nov 19
Lacy Phacelia Flowers (fall planting) flower Direct Sow Sep 15 Nov 14
Leaf Lettuce Mix (fall planting) lettuce Direct Sow Sep 15 Nov 9
Little Fingers Carrots (fall planting) root vegetable Direct Sow Sep 15 Nov 9
Little Gem Lettuce (fall planting) lettuce Direct Sow Sep 15 Nov 10
Little Marvel Pea (fall planting) legume Direct Sow Sep 15 Nov 17
Lollo Bionda Lettuce (fall planting) lettuce Direct Sow Sep 15 Nov 14
Lollo Rossa Lettuce (fall planting) lettuce Direct Sow Sep 15 Nov 10
Love-in-a-Mist Flowers (fall planting) flower Direct Sow Sep 15 Nov 24
Lunar White Carrots (fall planting) root vegetable Direct Sow Sep 15 Nov 14
Magenta Sunset Swiss Chard (fall planting) lettuce Direct Sow Sep 15 Nov 14
Mammoth Dill (fall planting) herb Direct Sow Sep 15 Nov 19
Marvel of Four Seasons Lettuce (fall planting) lettuce Direct Sow Sep 15 Nov 14
Matador Viking Spinach (fall planting) lettuce Direct Sow Sep 15 Nov 2
Mesclun Mix (fall planting) lettuce Direct Sow Sep 15 Oct 15
Michihili Cabbage (fall planting) brassica Direct Sow Sep 15 Nov 24
Minowase Daikon Radish (fall planting) root vegetable Direct Sow Sep 15 Nov 9
Mizuna (fall planting) lettuce Direct Sow Sep 15 Nov 4
Monstrueux de Viroflay Spinach (fall planting) lettuce Direct Sow Sep 15 Nov 4
Mustard Greens (fall planting) lettuce Direct Sow Sep 15 Nov 4
Napa Cabbage (fall planting) brassica Direct Sow Sep 15 Nov 24
Noble Giant Spinach (fall planting) lettuce Direct Sow Sep 15 Nov 4
Nutri-Red Carrots (fall planting) root vegetable Direct Sow Sep 15 Nov 24
Old Fashion Mustard (fall planting) lettuce Direct Sow Sep 15 Nov 4
Orange Swiss Chard (fall planting) lettuce Direct Sow Sep 15 Nov 9
Oregon Giant Snow Pea (fall planting) legume Direct Sow Sep 15 Nov 14
Oregon Sugar Pod Snow Pea (fall planting) legume Direct Sow Sep 15 Nov 22
Paris Market Carrots (fall planting) root vegetable Direct Sow Sep 15 Nov 19
Phacelia cover crop and bee forage (fall planting) cover crop Direct Sow Sep 15 Nov 14
Premier Kale (fall planting) lettuce Direct Sow Sep 15 Nov 14
Progress No. 9 Shelling Pea (fall planting) legume Direct Sow Sep 15 Nov 16
Purple Haze Carrots (fall planting) root vegetable Direct Sow Sep 15 Nov 27
Purple Plum Radishes (fall planting) root vegetable Direct Sow Sep 15 Oct 15
Purple Top White Globe Turnip (fall planting) root vegetable Direct Sow Sep 15 Nov 4
Rainbow Mix Swiss Chard (fall planting) lettuce Direct Sow Sep 15 Nov 14
Rambo Radish Microgreens (fall planting) microgreen Direct Sow Sep 15 Sep 30
Rapeseed Cover Crop (fall planting) cover crop Direct Sow Sep 15 Nov 24
Rapini Broccoli Raab (fall planting) brassica Direct Sow Sep 15 Nov 19
Red Leaf Lettuce (fall planting) lettuce Direct Sow Sep 15 Nov 9
Red Orach (fall planting) lettuce Direct Sow Sep 15 Oct 30
Red Romaine Lettuce (fall planting) lettuce Direct Sow Sep 15 Nov 24
Red Russian Kale (fall planting) lettuce Direct Sow Sep 15 Nov 4
Royal Carpet Alyssum Flowers (fall planting) flower Direct Sow Sep 15 Nov 14
Ruby Red Swiss Chard (fall planting) lettuce Direct Sow Sep 15 Nov 14
Salad Bowl Green Lettuce (fall planting) lettuce Direct Sow Sep 15 Nov 4
Scarlet Flax Flowers (fall planting) flower Direct Sow Sep 15 Nov 24
Shelling Pea (fall planting) legume Direct Sow Sep 15 Nov 24
Shungiku (Edible Chrysanthemum) (fall planting) lettuce Direct Sow Sep 15 Nov 9
Slow-Bolt (Slo-Bolt) Cilantro/Coriander (fall planting) herb Direct Sow Sep 15 Oct 25
Snow Crown Cauliflower (fall planting) brassica Direct Sow Sep 15 Nov 14
Snow Pea (fall planting) legume Direct Sow Sep 15 Nov 24
Snowball Self-Blanche Cauliflower (fall planting) brassica Direct Sow Sep 15 Nov 19
Sparkler Radishes (fall planting) root vegetable Direct Sow Sep 15 Oct 15
Speckled Pea Shoot Microgreens (fall planting) microgreen Direct Sow Sep 15 Sep 29
St. Valery Carrots (fall planting) root vegetable Direct Sow Sep 15 Nov 24
Sugar Ann Snap Pea (fall planting) legume Direct Sow Sep 15 Nov 9
Sugar Snap Pea (fall planting) legume Direct Sow Sep 4 Nov 13
Summer Bibb Lettuce (fall planting) lettuce Direct Sow Sep 15 Nov 14
Swiss Chard (fall planting) lettuce Direct Sow Sep 15 Nov 14
Tango Lettuce (fall planting) lettuce Direct Sow Sep 15 Oct 31
Tatsoi (fall planting) lettuce Direct Sow Sep 15 Oct 30
Tendergreen Mustard (fall planting) lettuce Direct Sow Sep 15 Nov 4
Tendersweet Carrots (fall planting) root vegetable Direct Sow Sep 15 Nov 24
Tom Thumb Lettuce (fall planting) lettuce Direct Sow Sep 15 Nov 24
Très Fine Maraîchère Frisée (fall planting) lettuce Direct Sow Sep 15 Nov 14
Vates Kale (fall planting) lettuce Direct Sow Sep 15 Nov 9
Vienna Purple Kohlrabi (fall planting) brassica Direct Sow Sep 15 Nov 19
Vienna White Kohlrabi (fall planting) brassica Direct Sow Sep 15 Nov 9
Viola and pansy edible flowers (fall planting) flower Direct Sow Sep 15 Nov 24
Violetta Purple Cauliflower (fall planting) brassica Direct Sow Sep 15 Nov 19
Wando Pea (fall planting) legume Direct Sow Sep 15 Nov 22
Watermelon Radishes (fall planting) root vegetable Direct Sow Sep 15 Nov 19
White Boston Lettuce (fall planting) lettuce Direct Sow Sep 15 Nov 4
White Detroit Beets (fall planting) root vegetable Direct Sow Sep 15 Nov 14
White Icicle Radishes (fall planting) root vegetable Direct Sow Sep 15 Oct 15
White Lisbon Bunching Onions (fall planting) allium Direct Sow Sep 15 Nov 14
Winner Kohlrabi (fall planting) brassica Direct Sow Sep 15 Nov 4
Winter Density Lettuce (fall planting) lettuce Direct Sow Sep 15 Nov 14
Winter Giant Spinach (fall planting) lettuce Direct Sow Sep 15 Nov 4

Harvest in September

Plant Type Planted / Sown Harvest Window
Winter rye cover crop stands cover crop Mar 20 Sep 16 – Oct 26
Black Beauty Eggplant (fall planting) vegetable Jul 15 Sep 28 – Oct 13
Casper Eggplant (fall planting) vegetable Jul 15 Sep 28
Japanese Eggplant (fall planting) vegetable Jul 15 Sep 3 – Sep 18
Long Green Louisiana Eggplant (fall planting) vegetable Jul 15 Sep 18 – Sep 23
Long Ping Tung Eggplant (fall planting) vegetable Jul 15 Sep 8 – Sep 13
Long Purple Italian Eggplant (fall planting) vegetable Jul 15 Sep 28
Pandora Striped Eggplant (fall planting) vegetable Jul 15 Sep 28 – Oct 3
Petch Siam Thai Eggplant (fall planting) vegetable Jul 15 Sep 15
Carmen Peppers (fall planting) pepper Aug 1 Sep 30 – Oct 20
Early Girl Tomatoes (fall planting) tomato Aug 1 Sep 22 – Oct 2
Gardener's Delight Tomatoes (fall planting) tomato Aug 1 Sep 30 – Oct 15
Glacier Tomatoes (fall planting) tomato Aug 1 Sep 25 – Sep 28
Green Envy Tomatoes (fall planting) tomato Aug 1 Sep 30 – Oct 10
Gypsy Peppers (fall planting) pepper Aug 1 Sep 30 – Oct 5
Honey Bee Tomatoes (fall planting) tomato Aug 1 Sep 30
Juliet Tomatoes (fall planting) tomato Aug 1 Sep 29 – Oct 1
King Arthur Peppers (fall planting) pepper Aug 1 Sep 29
Lunchbox Mini Peppers (fall planting) pepper Aug 1 Sep 25 – Sep 30
Matt's Wild Cherry Tomatoes (fall planting) tomato Aug 1 Sep 25 – Oct 5
Oregon Spring Tomatoes (fall planting) tomato Aug 1 Sep 28 – Oct 10
Padron Peppers (fall planting) pepper Aug 1 Sep 30
Red Robin Tomatoes (fall planting) tomato Aug 1 Sep 25
Sakura Tomatoes (fall planting) tomato Aug 1 Sep 25 – Sep 30
Shishito Peppers (fall planting) pepper Aug 1 Sep 30 – Oct 5
Stupice Tomatoes (fall planting) tomato Aug 1 Sep 25 – Oct 10
Sun Gold Tomatoes (fall planting) tomato Aug 1 Sep 27 – Oct 5
SunChocola Tomatoes (fall planting) tomato Aug 1 Sep 30 – Oct 10
Sungella Tomatoes (fall planting) tomato Aug 1 Sep 30 – Oct 10
Sweet 100 Tomatoes (fall planting) tomato Aug 1 Sep 30 – Oct 5
Sweet Million Tomatoes (fall planting) tomato Aug 1 Sep 30 – Oct 5
Tigerella Tomatoes (fall planting) tomato Aug 1 Sep 25 – Oct 10
Tiny Tim Tomatoes (fall planting) tomato Aug 1 Sep 15 – Sep 25
White Cherry Tomatoes (fall planting) tomato Aug 1 Sep 29 – Oct 10
Black Oil Sunflower Microgreens (fall planting) microgreen Sep 15 Sep 27
Rambo Radish Microgreens (fall planting) microgreen Sep 15 Sep 30
Speckled Pea Shoot Microgreens (fall planting) microgreen Sep 15 Sep 29

Key Tasks for September in Zone 8B

  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 Begin fall cool-season planting window this month. Direct sow lettuce, spinach, arugula, and radishes now for harvest before hard frost.
  4. 4 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 8B planting calendar
August September in Zone 8B October

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