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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
10 Items
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swiss-chard-bright-lights-seedsBulk Bright Lights Swiss Chard Seeds - Wholesale
-0
AAS Winner
Heirloom
Swiss Chard Seeds - Bright Lights
Starting at $3.49
hollyhock-summer-carnival-mix-htmlBulk Hollyhock Flower Seeds
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AAS Winner
Hollyhock Seeds - Summer Carnival Mix
Starting at $2.99
cosmos-sensation-mixture-flower-seedsCosmos Sensation Flower Seeds - Packet
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AAS Winner
Cosmos Seeds - Sensation Mixture
Starting at $2.99
echinacea-cheyenne-spirit-flower-seedsEchinacea Non GMO Seed
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Echinacea Seeds - Cheyenne Spirit
Starting at $6.79
zinnia-thumbelina-mixture-flower-seedThumbelina Mix Zinnia Seeds - Bulk
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AAS Winner
Zinnia Seeds - Thumbelina Mixture
Starting at $2.99
hollyhock-indian-spring-flower-seedsNon GMO Flower Seeds
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AAS Winner
Hollyhock Seeds - Indian Spring
Starting at $2.99
achillea-summer-pastels-mix-flower-seedsCommon Yarrow, Fernleaf Yarrow, Soldier's Woundwort, Old Man's Pepper, Thousand Leaf, Devil's Nettle, Sanguinary, Bloodwort Seeds
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AAS Winner
Achillea Seeds - Summer Pastels Mix
Starting at $3.99
phlox-21st-century-mix-flower-seedPlanting Phlox Seeds - GMO Free
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AAS Winner
Phlox Seeds - 21st Century Mix (coated)
Starting at $3.99
snapdragon-madame-butterfly-mixture-seedsSnapdragon Flower Non GMO Seeds
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AAS Winner
Snapdragon Seeds - Madame Butterfly Mixture
Starting at $4.19
Columbine McKanas Giant SeedColumbine Flowers - Non GMO
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Columbine Seeds - McKana Giant AAS
Starting at $3.39
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