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Zone 11B — March

What to Plant in March in Zone 11B

March in Zone 11B: 0 crops to start indoors, 0 to plant or direct sow outside, and 40 entering harvest window. Last frost averages . Reference city: Key West, FL.
Updated August 12, 2026 · Frost data from NOAA 1991-2020 Climate Normals
0 Start Indoors
0 Plant Outside
40 Harvest

Start Indoors in March

Nothing to start seeds indoors in March for Zone 11B.
Next window: September — 2 varieties, including Texas 1015Y SuperSweet Onion, Viola and pansy edible flowers.

Plant Outside in March

Nothing to plant or sow outside in March for Zone 11B.
Next window: October — 28 varieties, including Alaska Early Pea, Broad Windsor Fava Bean, Caraway.

Harvest in March

Plant Type Planted / Sown Harvest Window
Anise herb Nov 22 Mar 2, 2027 – Mar 22, 2027
Atlantic Giant Pumpkin squash Nov 22 Mar 22
Baby Blue Hubbard Winter Squash squash Nov 22 Mar 2
Big Max Pumpkin squash Nov 22 Mar 17, 2027 – Mar 22, 2027
Birds Eye Hot Peppers pepper Nov 29 Mar 9, 2027 – Mar 19, 2027
Bloody Butcher Corn vegetable Nov 29 Mar 9, 2027 – Mar 19, 2027
Butternut Squash squash Nov 29 Mar 9, 2027 – Mar 29, 2027
Caribbean Red Scotch Bonnet Pepper pepper Nov 29 Mar 4, 2027 – Mar 29, 2027
Chayote squash vegetable Nov 29 Mar 29, 2027 – Apr 28, 2027
Cinderella Pumpkin squash Nov 22 Mar 12
Classic Cumin herb Nov 22 Mar 2, 2027 – Mar 22, 2027
Delica kabocha squash squash Nov 29 Mar 4, 2027 – Mar 19, 2027
Evergreen Bunching Onions root vegetable Nov 15 Mar 15
Golden Hubbard Winter Squash squash Nov 22 Mar 2
Grano Red Onions root vegetable Nov 15 Mar 15
Grano White Onions root vegetable Nov 15 Mar 15
Green Hubbard Winter Squash squash Nov 22 Mar 12
Green Striped Cushaw Crookneck Winter Squash squash Nov 22 Mar 2
Honeydew Melon melon Nov 29 Mar 9, 2027 – Mar 24, 2027
Jack Be Little Pumpkin squash Nov 22 Mar 2
Long Island Cheese Winter Squash squash Nov 22 Mar 2
Luffa gourds vegetable Nov 29 Mar 9, 2027 – Mar 29, 2027
Pacific Giant Pumpkin squash Nov 22 Mar 17, 2027 – Mar 27, 2027
Paris Yellow Pumpkin squash Nov 22 Mar 2
Parsnip root vegetable Nov 22 Mar 2, 2027 – Apr 1, 2027
Pink Banana Jumbo Winter Squash squash Nov 22 Mar 2, 2027 – Mar 12, 2027
Queensland Blue Winter Squash squash Nov 22 Mar 2, 2027 – Mar 22, 2027
Rainbow Corn vegetable Nov 22 Mar 7, 2027 – Mar 17, 2027
Red Burgundy Onions root vegetable Nov 15 Mar 5, 2027 – Mar 15, 2027
Southport Red Globe Onions root vegetable Nov 15 Mar 15
Southport White Globe Onions root vegetable Nov 15 Mar 15
Spanish Sweet White Onions root vegetable Nov 15 Mar 5, 2027 – Mar 15, 2027
Tepin Hot Peppers pepper Nov 29 Mar 29, 2027 – Jun 17, 2027
White Cushaw Crookneck Winter Squash squash Nov 22 Mar 2
Crisphead lettuce Dec 24 Mar 2, 2027 – Mar 9, 2027
Full Heart Batavian lettuce Dec 24 Mar 19, 2027 – Mar 24, 2027
Habanero Pepper pepper Dec 6 Mar 6, 2027 – Apr 5, 2027
Iceberg lettuce Dec 24 Mar 2, 2027 – Mar 9, 2027
Morris Heading lettuce Dec 24 Mar 9, 2027 – Mar 14, 2027
Verona Red lettuce Dec 24 Mar 19, 2027 – Mar 26, 2027

Key Tasks for March in Zone 11B

  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.
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