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Zone 9B — December

What to Plant in December in Zone 9B

December in Zone 9B: 4 crops to start indoors, 1 to plant or direct sow outside, and 122 entering harvest window. Last frost averages February 7. Reference city: Miami, FL.
Updated May 13, 2026 · Frost data from NOAA 1991-2020 Climate Normals
4 Start Indoors
1 Plant Outside
122 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
Giant Maximum Mix Snapdragon Flowers flower Dec 20 Jan 17 Apr 7 – Apr 22
Texas 1015Y SuperSweet Onion root vegetable Dec 6 Jan 10 Apr 25 – May 5
Viola and pansy edible flowers flower Dec 20 Jan 24 Mar 25 – Apr 4
California Bluebell flower Dec 17 Dec 24 Feb 17 – Feb 27

Plant Outside in December

Plant Type Action Target Date Harvest Window
California Bluebell flower Transplant Dec 24 Feb 17 – Feb 27

Harvest in December

Plant Type Planted / Sown Harvest Window
Nantes Carrot (fall planting) root vegetable Sep 21 Dec 5
Alaska Early Pea (fall planting) legume Oct 15 Dec 14
All Year Round (fall planting) lettuce Oct 15 Dec 27
All Year Round Cauliflower (fall planting) brassica Oct 15 Dec 19
America (fall planting) lettuce Oct 15 Dec 9
Blonde de Paris (fall planting) lettuce Oct 15 Dec 14
Bloomsdale Longstanding Spinach (fall planting) lettuce Oct 15 Dec 6
Blue Curled Scotch (fall planting) lettuce Oct 15 Dec 14
Bok Choy (fall planting) lettuce Oct 15 Dec 14
Boltardy Beets (fall planting) root vegetable Oct 15 Dec 14
Bouquet Dill (fall planting) herb Oct 15 Dec 19
Broadleaf Classic (fall planting) lettuce Oct 15 Dec 14
Broccolini (fall planting) brassica Oct 15 Dec 24
Bull's Blood Beets (fall planting) root vegetable Oct 15 Dec 9
Burgundy Boston (fall planting) lettuce Oct 15 Dec 9
Buttercrunch (fall planting) lettuce Oct 15 Dec 9
Butterhead Lettuce (fall planting) lettuce Oct 15 Dec 19
Calabrese Broccoli (fall planting) brassica Oct 15 Dec 19
Calendula (fall planting) flower Oct 15 Dec 14
California Bluebell (fall planting) flower Oct 15 Dec 19
Calypso Cilantro (fall planting) herb Oct 15 Dec 9
Canary Yellow (fall planting) lettuce Oct 15 Dec 14
Cascadia Sugar Snap Pea (fall planting) legume Oct 15 Dec 21
Chantenay Carrots (fall planting) root vegetable Oct 15 Dec 24
Chinese Broccoli (Gai Lan) (fall planting) brassica Oct 15 Dec 4
Chioggia Beet (fall planting) root vegetable Oct 15 Dec 19
Copenhagen Cabbage (fall planting) brassica Oct 15 Dec 19
Crimson Forest Bunching Onions (fall planting) root vegetable Oct 15 Dec 14
Crosby's Egyptian Beets (fall planting) root vegetable Oct 15 Dec 14
Curly Kale (fall planting) lettuce Oct 15 Dec 19
Cylindra Beets (fall planting) root vegetable Oct 15 Dec 14
Daikon Radishes (fall planting) root vegetable Oct 15 Dec 9
Dark Green Romaine (fall planting) lettuce Oct 15 Dec 24
Delicatesse Blue Kohlrabi (fall planting) brassica Oct 15 Dec 14
Delicatesse White Kohlrabi (fall planting) brassica Oct 15 Dec 14
Detroit Dark Red Beet (fall planting) root vegetable Oct 15 Dec 14
Di Cicco Broccoli (fall planting) brassica Oct 15 Dec 19
Dill (fall planting) herb Oct 15 Dec 9
Dukat Dill (fall planting) herb Oct 15 Dec 4
Dutch Lamb's Lettuce (fall planting) lettuce Oct 15 Dec 4
Early Purple Broccoli (fall planting) brassica Oct 15 Dec 19
Early Wonder Beets (fall planting) root vegetable Oct 15 Dec 4
Endive / Escarole (fall planting) lettuce Oct 15 Dec 19
Fairy Dwarf Mix Candytuft Flowers (fall planting) flower Oct 15 Dec 14
Fenugreek (fall planting) herb Oct 15 Dec 4
Florida Broadleaf (fall planting) lettuce Oct 15 Dec 4
Fordhook Giant (fall planting) lettuce Oct 15 Dec 9
French Lamb's Lettuce (fall planting) lettuce Oct 15 Dec 4
German Chamomile (fall planting) herb Oct 15 Dec 19
Golden Acre Cabbage (fall planting) brassica Oct 15 Dec 19
Golden Beet (fall planting) root vegetable Oct 15 Dec 19
Golden Detroit Beets (fall planting) root vegetable Oct 15 Dec 14
Golden Globe Turnips (fall planting) root vegetable Oct 15 Dec 4
Green Arrow Pea (fall planting) legume Oct 15 Dec 24
Hot Pink (fall planting) lettuce Oct 15 Dec 14
Igloo Cauliflower (fall planting) brassica Oct 15 Dec 24
Kagraner Sommer (fall planting) lettuce Oct 15 Dec 12
Kuroda Carrots (fall planting) root vegetable Oct 15 Dec 24
Lacinato Kale (fall planting) lettuce Oct 15 Dec 19
Leaf Lettuce Mix (fall planting) lettuce Oct 15 Dec 9
Little Fingers Carrots (fall planting) root vegetable Oct 15 Dec 9
Little Gem (fall planting) lettuce Oct 15 Dec 10
Little Marvel Pea (fall planting) legume Oct 15 Dec 17
Lollo Bionda (fall planting) lettuce Oct 15 Dec 14
Lollo Rossa (fall planting) lettuce Oct 15 Dec 10
Magenta Sunset (fall planting) lettuce Oct 15 Dec 14
Mammoth Dill (fall planting) herb Oct 15 Dec 19
Marvel of Four Seasons (fall planting) lettuce Oct 15 Dec 14
Matador Viking (fall planting) lettuce Oct 15 Dec 2
Michihili Cabbage (fall planting) brassica Oct 15 Dec 24
Mizuna (fall planting) lettuce Oct 15 Dec 4
Monstrueux de Viroflay (fall planting) lettuce Oct 15 Dec 4
Mustard Greens (fall planting) lettuce Oct 15 Dec 4
New Zealand Spinach (fall planting) lettuce Oct 15 Dec 14
Noble Giant (fall planting) lettuce Oct 15 Dec 4
Old Fashion (fall planting) lettuce Oct 15 Dec 4
Orange (fall planting) lettuce Oct 15 Dec 9
Oregon Sugar Pod Snow Pea (fall planting) legume Oct 15 Dec 22
Paris Market Carrots (fall planting) root vegetable Oct 15 Dec 9
Phacelia cover crop and bee forage (fall planting) cover crop Oct 15 Dec 14
Premier (fall planting) lettuce Oct 15 Dec 14
Progress No. 9 Shelling Pea (fall planting) legume Oct 15 Dec 16
Purple Haze Carrots (fall planting) root vegetable Oct 15 Dec 27
Rainbow Mix (fall planting) lettuce Oct 15 Dec 14
Rapeseed Cover Crop (fall planting) cover crop Oct 15 Dec 24
Rapini Broccoli Raab (fall planting) brassica Oct 15 Dec 19
Red Leaf Lettuce (fall planting) lettuce Oct 15 Dec 9
Red Romaine (fall planting) lettuce Oct 15 Dec 24
Red Russian Kale (fall planting) lettuce Oct 15 Dec 14
Royal Carpet Alyssum Flowers (fall planting) flower Oct 15 Dec 14
Ruby Red (fall planting) lettuce Oct 15 Dec 14
Salad Bowl Green (fall planting) lettuce Oct 15 Dec 4
Scarlet Flax Flowers (fall planting) flower Oct 15 Dec 24
Shelling Pea (fall planting) legume Oct 15 Dec 24
Shungiku (Edible Chrysanthemum) (fall planting) lettuce Oct 15 Dec 9
Siberian Dwarf (fall planting) lettuce Oct 15 Dec 9
Snow Crown Cauliflower (fall planting) brassica Oct 15 Dec 14
Snow Pea (fall planting) legume Oct 15 Dec 24
Snowball Self-Blanche Cauliflower (fall planting) brassica Oct 15 Dec 19
St. Valery Carrots (fall planting) root vegetable Oct 15 Dec 24
Sugar Ann Snap Pea (fall planting) legume Oct 15 Dec 10
Sugar Snap Pea (fall planting) legume Oct 5 Dec 14
Summer Bibb (fall planting) lettuce Oct 15 Dec 14
Swiss Chard (fall planting) lettuce Oct 15 Dec 14
Tendergreen (fall planting) lettuce Oct 15 Dec 4
Tendersweet Carrots (fall planting) root vegetable Oct 15 Dec 24
Tom Thumb (fall planting) lettuce Oct 15 Dec 24
Turnip (fall planting) root vegetable Oct 15 Dec 14
Vates Kale (fall planting) lettuce Oct 15 Dec 9
Vienna Purple Kohlrabi (fall planting) brassica Oct 15 Dec 19
Vienna White Kohlrabi (fall planting) brassica Oct 15 Dec 19
Vietnamese Coriander (fall planting) herb Oct 15 Dec 14
Viola and pansy edible flowers (fall planting) flower Oct 15 Dec 24
Violetta Purple Cauliflower (fall planting) brassica Oct 15 Dec 19
Wando Pea (fall planting) legume Oct 15 Dec 22
Watermelon Radishes (fall planting) root vegetable Oct 15 Dec 19
White Boston (fall planting) lettuce Oct 15 Dec 4
White Detroit Beets (fall planting) root vegetable Oct 15 Dec 14
White Lisbon Bunching Onions (fall planting) root vegetable Oct 15 Dec 19
Winner Kohlrabi (fall planting) brassica Oct 15 Dec 4
Winter Density (fall planting) lettuce Oct 15 Dec 14
Winter Giant (fall planting) lettuce Oct 15 Dec 4

Key Tasks for December in Zone 9B

  1. 1 Start 4 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
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