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Zone 9B — December

What to Plant in December in Zone 9B

December in Zone 9B: 99 crops to start indoors, 11 to plant or direct sow outside, and 0 entering harvest window. Last frost averages February 7. Reference city: Miami, FL.
Updated May 13, 2026 · Frost data from NOAA 1991-2020 Climate Normals
99 Start Indoors
11 Plant Outside
0 Harvest
Frost risk: High

Frost risk is still high in Zone 9B. The last spring frost typically lands on February 7, with the earliest plausible clearance around January 6. Hold tender crops indoors a while longer.

See full Zone 9B frost outlook →

Start Indoors in December

Plant Type Start Indoors Transplant Outside Harvest Window
African Flake Daisy Flowers flower Dec 31 Jan 14 Apr 14 – Apr 24
Alaska Early Pea legume Dec 31 Jan 7 Mar 3 – Mar 8
All Season Cabbage brassica Dec 31 Jan 14 Mar 25 – Apr 4
All Year Round Cauliflower brassica Dec 31 Jan 14 Mar 20
Amish Paste Tomatoes tomato Dec 31 Jan 28 Apr 12 – Apr 23
Ancho Grande Hot Peppers pepper Dec 31 Jan 28 Apr 13 – Apr 23
Angelica herb Dec 31 Jan 28 Apr 18 – Apr 28
Barletta, Pearly White Onions root vegetable Dec 31 Jan 28 Apr 13 – Apr 18
Birds Eye Hot Peppers pepper Dec 31 Jan 28 May 8 – May 18
Broad Windsor Fava Bean legume Dec 31 Jan 7 Mar 23 – Apr 2
Brunswick Cabbage brassica Dec 31 Jan 14 Apr 4 – Apr 14
Calabrese Broccoli brassica Dec 31 Jan 14 Mar 20
Caraway herb Dec 31 Jan 7 Perennial — see plant page
Carentan Leeks allium Dec 24 Jan 14 Apr 14 – May 4
Cascadia Sugar Snap Pea legume Dec 31 Jan 7 Mar 13 – Mar 15
Charleston Wakefield Cabbage brassica Dec 31 Jan 14 Mar 30
Chervil herb Dec 31 Jan 7 Feb 11 – Feb 21
Chocolate Habanero Hot Peppers pepper Dec 31 Jan 28 Apr 23 – May 13
Copenhagen Cabbage brassica Dec 31 Jan 14 Mar 20
Curly Parsley herb Dec 24 Jan 28 Apr 8 – Apr 18
Dandelion herb Dec 31 Jan 7 Perennial — see plant page
Danish Ballhead Cabbage brassica Dec 31 Jan 14 Apr 24 – May 4
Devils Tongue Yellow Hot Peppers pepper Dec 31 Jan 28 Apr 28 – May 18
Di Cicco Broccoli brassica Dec 31 Jan 14 Mar 20
Drumhead Cabbage brassica Dec 31 Jan 14 Apr 14 – Apr 24
Early Jersey Wakefield Cabbage brassica Dec 31 Jan 14 Mar 20 – Mar 30
Early Purple Broccoli brassica Dec 31 Jan 14 Mar 20
English Thyme herb Dec 31 Jan 28 Perennial — see plant page
English White Daisy Flowers flower Dec 31 Jan 28 Perennial — see plant page
Firecracker Hot Peppers pepper Dec 31 Jan 28 Apr 18 – May 28
Flat-Leaf Parsley herb Dec 24 Jan 28 Apr 8 – Apr 28
Giant Maximum Mix Snapdragon Flowers flower Dec 10 Jan 7 Mar 28 – Apr 12
Giant Musselburgh Leeks allium Dec 24 Jan 14 Apr 24 – Apr 29
Glory of Enkhuizen Cabbage brassica Dec 31 Jan 14 Apr 14
Golden Acre Cabbage brassica Dec 31 Jan 14 Mar 20
Grano Red Onions root vegetable Dec 31 Jan 28 May 28
Grano White Onions root vegetable Dec 31 Jan 28 May 28
Green Arrow Pea legume Dec 31 Jan 7 Mar 13 – Mar 18
Hard Red Wheat Cover Crop cover crop Dec 31 Jan 7 Mar 23 – Apr 12
Holiday Marbles Hot Peppers pepper Dec 31 Jan 28 Apr 28 – May 18
Igloo Cauliflower brassica Dec 31 Jan 14 Mar 20 – Mar 25
Imperial Star Artichoke vegetable Dec 24 Jan 28 Apr 28 – May 8
Lemon Habanero Hot Peppers pepper Dec 31 Jan 28 Apr 23 – May 13
Little Marvel Pea legume Dec 31 Jan 7 Mar 8 – Mar 11
Mammoth Melting Sugar Snow Pea legume Dec 31 Jan 7 Mar 16 – Mar 22
Michihili Cabbage brassica Dec 31 Jan 14 Mar 25
NuMex Twilight Hot Peppers pepper Dec 31 Jan 28 Apr 28 – May 28
OG American Flag Leeks allium Dec 24 Jan 14 Apr 14 – Apr 24
Orange Habanero Hot Peppers pepper Dec 31 Jan 28 Apr 23 – May 13
Oregon Giant Snow Pea legume Dec 31 Jan 7 Mar 18 – Mar 22
Oregon Sugar Pod Snow Pea legume Dec 31 Jan 7 Mar 8 – Mar 16
Ox-Eye Daisy Flowers flower Dec 31 Jan 28 Perennial — see plant page
Pasilla de Oaxaca Hot Peppers pepper Dec 31 Jan 28 Apr 13 – Apr 23
Pepperoncini Pepper pepper Dec 31 Jan 28 Apr 3 – Apr 13
Pretty Purple Hot Peppers pepper Dec 31 Jan 28 Apr 28 – May 28
Progress No. 9 Shelling Pea legume Dec 31 Jan 7 Mar 6 – Mar 10
Purple Tiger Hot Peppers pepper Dec 31 Jan 28 Apr 28 – May 8
Red Acre Cabbage brassica Dec 31 Jan 14 Mar 30 – Apr 4
Red Burgundy Onions root vegetable Dec 31 Jan 28 May 18 – May 28
Red Caribbean Habanero Hot Peppers pepper Dec 31 Jan 28 Apr 23 – May 13
Red Cayenne Hot Peppers pepper Dec 31 Jan 28 Apr 13 – Apr 23
Red Cherry Hot Peppers pepper Dec 31 Jan 28 Apr 13 – Apr 23
Red Mushroom Hot Peppers pepper Dec 31 Jan 28 Apr 13 – Apr 23
Santa Fe Grande Hot Peppers pepper Dec 31 Jan 28 Apr 13 – Apr 18
Savoy Perfection Cabbage brassica Dec 31 Jan 14 Apr 14 – Apr 19
Shasta Daisy Flowers flower Dec 24 Jan 28 Perennial — see plant page
Snowball Self-Blanche Cauliflower brassica Dec 31 Jan 14 Mar 20
Southport Red Globe Onions root vegetable Dec 31 Jan 28 May 28
Southport White Globe Onions root vegetable Dec 31 Jan 28 May 28
Spanish Sweet White Onions root vegetable Dec 31 Jan 28 May 18 – May 28
Sugar Ann Snap Pea legume Dec 31 Jan 7 Feb 28 – Mar 4
Tabasco Hot Peppers pepper Dec 31 Jan 28 Apr 18 – Apr 28
Tepin Hot Peppers pepper Dec 31 Jan 28 May 28 – Aug 16
Tropical Milkweed Flowers flower Dec 31 Jan 28 Perennial — see plant page
Victoria Rhubarb vegetable Dec 24 Jan 14 Perennial — see plant page
Viola and pansy edible flowers flower Dec 10 Jan 14 Mar 15 – Mar 25
Violetta Purple Cauliflower brassica Dec 31 Jan 14 Mar 20
Wando Pea legume Dec 31 Jan 7 Mar 11 – Mar 16
Yellow Jalapeno (Caloro) Hot Peppers pepper Dec 31 Jan 28 Apr 13 – Apr 23
Yellow Mushroom Hot Peppers pepper Dec 31 Jan 28 Apr 13 – Apr 23
Yellow Scotch Bonnet Hot Peppers pepper Dec 31 Jan 28 Apr 28 – May 28
California Wonder Peppers pepper Dec 31 Feb 4 Apr 17 – Apr 20
Carolina Reaper peppers pepper Dec 31 Feb 11 May 12 – Jun 11
Cherry Bomb peppers pepper Dec 31 Feb 11 Apr 27 – May 2
Datil peppers pepper Dec 31 Feb 11 May 12 – Jun 1
Golden Celery vegetable Dec 31 Feb 4 Apr 30 – May 10
Pinkeye Purple Hull Cowpea legume Dec 17 Feb 11 Apr 12 – Apr 22
Tendercrisp Celery vegetable Dec 31 Feb 4 Apr 30 – May 15
Trinidad Moruga Scorpion peppers pepper Dec 31 Feb 11 May 2 – Jun 11
Black Salsify root vegetable Dec 24 Dec 31 Perennial — see plant page
California Bluebell flower Dec 7 Dec 14 Feb 7 – Feb 17
Chinese Forget-Me-Not Flowers flower Dec 22 Dec 29 Mar 4 – Mar 24
Crimson Cherry Rhubarb Root vegetable Dec 24 Dec 31 Perennial — see plant page
Dutch Yellow Shallots allium Dec 24 Dec 31 Mar 31 – Apr 30
French Red Shallots allium Dec 24 Dec 31 Mar 31 – Apr 30
Holland Red Shallots allium Dec 24 Dec 31 Mar 31 – Apr 30
Rapeseed Cover Crop cover crop Dec 22 Dec 29 Feb 12 – Mar 9
Tatsoi lettuce Dec 17 Dec 31 Jan 25 – Feb 14
Yellow Sweet Blossom Clover Cover Crop cover crop Dec 22 Dec 29 Feb 27 – Mar 29

Plant Outside in December

Plant Type Action Target Date Harvest Window
Black Salsify root vegetable Transplant Dec 31 Perennial — see plant page
California Bluebell flower Transplant Dec 14 Feb 7 – Feb 17
Chinese Forget-Me-Not Flowers flower Transplant Dec 29 Mar 4 – Mar 24
Crimson Cherry Rhubarb Root vegetable Transplant Dec 31 Perennial — see plant page
Dutch Yellow Shallots allium Transplant Dec 31 Mar 31 – Apr 30
French Red Shallots allium Transplant Dec 31 Mar 31 – Apr 30
Holland Red Shallots allium Transplant Dec 31 Mar 31 – Apr 30
Rapeseed Cover Crop cover crop Transplant Dec 29 Feb 12 – Mar 9
Tatsoi lettuce Transplant Dec 31 Jan 25 – Feb 14
Texas 1015Y SuperSweet Onion root vegetable Transplant Dec 31 Apr 15 – Apr 25
Yellow Sweet Blossom Clover Cover Crop cover crop Transplant Dec 29 Feb 27 – Mar 29

Harvest in December

No crops entering harvest in December for Zone 9B.

Key Tasks for December in Zone 9B

  1. 1 Start 99 varieties indoors this month under grow lights or in a sunny south-facing window. Use a seed-starting mix and bottom heat (70–75°F) for best germination rates.
  2. 2 Harden off transplants before moving outdoors — set them outside in a sheltered spot for increasing hours over 7–10 days before planting in the ground.
  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 9B planting calendar
November December in Zone 9B January

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