May is the main planting kickoff in cold-winter zones, when gardens finally move from starts and prep into full outdoor action. Early May often still favors hardy transplants and direct-sown cool-season crops, while mid-to-late May is when many areas can safely set out warm-season plants as frost risk drops. Keep hardening off seedlings, use row cover if nights run cold, and focus on steady watering and early weed control so young plants establish quickly.
Indoors (fresh harvests):
-
Microgreens: peas, broccoli, sunflowers, arugula
-
Sprouts: alfalfa, broccoli, radish, mung
-
Herbs & greens under lights: chives, parsley, mint
Crops to start indoors in good light: tomato, pepper, eggplant, basil, cucumber, squash, melons, zinnia, marigold
Transplants to move outdoors (harden first): broccoli, cabbage, cauliflower, kohlrabi, lettuce, onion, parsley, pansies, snapdragons — and by mid-to-late May, tomato, pepper, and eggplant as frost risk drops
Crops that can be directly sown outdoors in May: peas, spinach, kale, Swiss chard, beets, carrots, radishes, turnips, parsnip, dill, cilantro — and after last frost: beans, corn, cucumber, squash, sunflower, nasturtium, sweet peas
Cover crops: oats, field peas, hairy vetch, red clover
Tip: This zone group covers a lot of territory. Nothing replaces talking with experienced gardeners in your area and watching the weather closely.
Use your USDA zone as a guide. Microclimates matter — coastal/urban spots run warmer; high elevation runs colder.
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Onion Seeds - Short - Texas Grano 502
110-165 Days to maturity. Allium cepa. Texas Grano 502 Onion Vegetable Seeds. Non-GMO, annual, openn-pollinated, heirloom, short-day onion seeds. A short-day onion that is suitable for planting in early fall...
Daffodil Bulbs - Trumpet 'Mount Hood'
10 Bulb Bag This is a pre-order item that is expected to ship in Late October to November for fall planting. Other seeds, supplies, or kits ordered with this product...
Anemone Bulbs - Carmel White
10 Bulb Bag This is a pre-order item that is expected to ship in Late October to November for fall planting. Other seeds, supplies, or kits ordered with this product...
Anemone Bulbs - Galilee Blue
10 Bulb Bag This is a pre-order item that is expected to ship in Late October to November for fall planting. Other seeds, supplies, or kits ordered with this product...
Anemone Bulbs - Carmel Bordeaux
10 Bulb Bag This is a pre-order item that is expected to ship in Late October to November for fall planting. Other seeds, supplies, or kits ordered with this product...
Daffodil Bulbs - Large Cupped 'Fortune'
10 Bulb Bag This is a pre-order item that is expected to ship in Late October to November for fall planting. Other seeds, supplies, or kits ordered with this product...
Anemone Bulbs - Galilee Pastel Mix
10 Bulb Bag This is a pre-order item that is expected to ship in Late October to November for fall planting. Other seeds, supplies, or kits ordered with this product...
Melon Seeds - Giallo Canary Rugoso
90-110 Days to maturity. Cucumis melo. Giallo Canary Rugoso Melon Seeds. A non-GMO, annual, open-pollinated, heat-tolerant melon. Suitable for growing in garden plots, raised beds, and greenhouses. This unique canary...
Anemone Bulbs - Galilee Pink
10 Bulb Bag This is a pre-order item that is expected to ship in Late October to November for fall planting. Other seeds, supplies, or kits ordered with this product...
Easter Lily Bulbs - Miracle
1 Bulb Bag This is a pre-order item that is expected to ship in Mid-December for indoor or winter planting in warm climates. Other seeds, supplies, or kits ordered with...
Tulip Bulbs - Fringed - Mix
10 Bulb Bag This is a pre-order item that is expected to ship in October for fall planting. Other seeds, supplies, or kits ordered with this product will ship separately....
Tulip Bulbs - Parrot - Mix
10 Bulb Bag This is a pre-order item that is expected to ship in October for fall planting. Other seeds, supplies, or kits ordered with this product will ship separately....
Tulip Bulbs - Triumph - Mix
10 Bulb Bag This is a pre-order item that is expected to ship in October for fall planting. Other seeds, supplies, or kits ordered with this product will ship separately....
Sunflower Seeds - Velvet Queen (Organic)
90-110 Days to maturity. Helianthus annuus. Organic Velvet Queen Sunflower Seeds: Non-GMO. Open Pollinated. Organic. Ornamental. Annual. Heirloom. Velvet Queen seeds grow one of the summer's most exclusive and rare...
Pumpkin Seeds - Blue Prince F1 AAS
Blue Prince F1 AAS Hybrid Pumpkin Seeds. Cucurbita maxima. F1 Hybrid. Non-GMO. Annual. 110 days to maturity. 2020 AAS Winner. For any edible entry to become an AAS Winner, it...
Pumpkin Seeds - Harvest King Hybrid
Harvest King F1 Hybrid Pumpkin Seeds. Cucurbita pepo. F1 Hybrid. Non-GMO. Annual. 110 days to maturity. Harvest King F1 is a 23 to 35 lb pumpkin, similar to Harvest Jack...
Pumpkin Seeds - Cherokee Bush - Clearance Seeds
65% Germination - Non-refundable clearance seeds. 100-110 Days to maturity. Cherokee Bush Pumpkin Seeds. Five to eight-pound pumpkins are produced on a space-saving bush plant that behaves well in a...
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