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If you live in the cold frost-prone zones of 1, 2, 3, 4, 5, 6, and 7a, these seeds are for you! While December is typically filled with freezing temperatures and the occasional blanket of snow, you can still plant these recommended seeds indoors for both quick harvesting and a head start on the approaching garden season.

Outdoors: too cold for tender annual veg/flowers. If the soil is workable with a season-extending cover, plant garlic and shallots; otherwise, mulch beds for spring.

Dormant Sowing: This is the technique of broadcasting when the soil is cold below 50F, but not frozen. Gently press the seeds into the soil for good contact. Then water. The seed overwinters and sprouts naturally in the spring. We recommend dormant sowing wildflower mixes, poppies, larkspur, bachelor's buttons, calendula, rudbeckia, and columbine.

Indoors (For fresh harvesting)

Microgreens: sunflower, pea, radish, spicy brassica blends—cut in 7–14 days.

Sprouts: alfalfa, mung, clover, broccoli—ready in 3–7 days.

Herbs & greens under lights: cut-and-come-again lettuce, baby kale, arugula, basil (warm room).

Houseplants from seed (fun winter projects): coleus, polka dot plant - if you are feeling courageous, consider begonias or impatiens.

Starts to plant soon: perennial herbs; plan seed-starting calendars for onions (January), early brassicas (late winter), and warm crops (early spring).

Tip: Prioritize sanitation, airflow, and fresh seed-starting mix for indoor setups; run lights 14–16 hours/day for compact growth.

50 100 true //store.trueleafmarket.com/cdn/shop/t/54/assets/review-fallback.json?v=33078429469613971781712858278
Legend: H for Heirloom, O for Organic, A for AAS Winner, F for staff favorites
22 Items
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10 x 20 Growing Trays WITH Drain Holes10 x 20 Growing Trays WITH Drain Holes
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5 x 5 Small Growing Tray Inserts (with Drain Holes)5 x 5 Small Growing Tray Inserts (with Drain Holes)
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10 x10 Growing Trays WITH Drain Holes10 x10 Growing Trays WITH Drain Holes
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10 x10 Growing Trays WITH Drain Holes
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1020 Heavy Duty Microgreens Trays - With Holes - Black - Shallow1020 Heavy Duty Microgreens Trays - With Holes - Black - Shallow
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Tray Insert - 72 Cell - 12x6 NestedTray Insert - 72 Cell - 12x6 Nested
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Starting at $8.52
Tray Insert - 18 CellTray Insert - 18 Cell
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Tray Insert - 288 PlugTray Insert - 288 Plug
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Tray Insert - 36 Cell - 6x6 Nested (3.25" Deep)Tray Insert - 36 Cell - 6x6 Nested (3.25" Deep)
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Starting at $13.45
12 Cell Seed Starting Set - Tray, Insert, Dome12 Cell Seed Starting Set - Tray, Insert, Dome
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Tray Insert - 32 Cell - 8x4 NestedTray Insert - 32 Cell - 8x4 Nested
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1020 Heavy Duty Microgreens Trays - With Holes - Green - Shallow
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Tray Insert - 48 Cell - 12x4 NestedTray Insert - 48 Cell - 12x4 Nested
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Bootstrap Farmer - 5x5 Heavy Duty Microgreens Tray InsertsBootstrap Farmer - 5x5 Heavy Duty Microgreens Tray Inserts
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Starting at $19.62
Micro Punnet Tray - MicrogreensMicro Punnet Tray - Microgreens
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Starting at $12.32
SPECIAL EDITION Harvest Orange 1020 Heavy Duty Garden TraySPECIAL EDITION Harvest Orange 1020 Heavy Duty Garden Tray
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Staff Favorite
SPECIAL EDITION Harvest Orange 1020 Heavy Duty Garden Tray
Starting at $15.48
1020 Heavy Duty Microgreens Trays - With Holes - Black - Deep
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Starting at $14.99
Tray Insert - 12 Cell TraysTray Insert - 12 Cell Trays
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1020 1 Inch Deep Mesh Trays - Extra Strength1020 1 Inch Deep Mesh Trays - Extra Strength
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Starting at $14.46
1020 Heavy Duty Microgreens Trays - With Holes - Blue - Shallow
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1020 2.5 Inch Deep Mesh Trays - Extra Strength
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Tray Insert - 36 Cell - 6x6 Nested (2.25" Deep)Tray Insert - 36 Cell - 6x6 Nested (2.25" Deep)
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Bootstrap Farmer - Colorful 5x5 Heavy Duty Microgreens Tray InsertsBootstrap Farmer - Colorful 5x5 Heavy Duty Microgreens Tray Inserts
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Starting at $53.10
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