May is prime warm-season planting time in mild-winter zones, with soil temperatures rising and growth accelerating. This is the month to get main-season crops established outdoors, keep up with succession sowing, and set up supports before vines and tall plants take off. Watch moisture as days warm, mulch to hold soil moisture, and keep an eye out for the first big flush of pests as the garden hits its stride.

Indoors (fresh harvests):

  • Microgreens: peas, broccoli, sunflowers, arugula
  • Sprouts: alfalfa, broccoli, radish, mung
  • Herbs & greens under lights: chives, parsley, mint

Transplants to move outdoors (harden first): pepper, tomato, eggplant, melons, basil, okra — these should go out early May if not already in the ground

Crops that can be directly sown outdoors in May: beans, corn, cucumber, squash, melons, okra, sunflower, basil, dill, sweet potato slips. Succession sow beets, carrots, and radishes early in the month before heat sets in.

Cover crops: buckwheat, cowpeas, sorghum-sudangrass

Note: Warm-season crops should be going directly outdoors now, not starting under lights.

Tip: An Olympia, WA zone 8 is very different from a Jackson, MS zone 8. Consider checking with your state Extension Service office for more specific recommendations and guidelines.

Use your USDA zone as a guide. Microclimates matter — coastal/urban spots run warmer; high elevation runs colder.

50 100 true //store.trueleafmarket.com/cdn/shop/t/54/assets/review-fallback.json?v=33078429469613971781712858278
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2077 Items
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Corn Seeds - Sweet - Peaches and Cream Hybrid (treated)mid size pouch type seed packaging for - Corn Sweet Peaches and Cream Hybrid treated
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Melon Seeds - Honeydew - Green Flesh (Organic)small size packet type seed packaging for - Melon Honeydew Green Flesh Organic
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Pepper Seeds - Hot - Korean - Gochujang King - Hybrid
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Carrot Seeds - Royal Chantenaysmall size packet type seed packaging for - Carrot Royal Chantenay
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Basil Seeds - Cinnamonsmall size packet type seed packaging for - Basil Cinnamon
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Tomato Seeds - Slicing - Brandywine Red Potato Leaf (Organic)mid size pouch type seed packaging for - Tomato Slicing Yellow Perfection Organic
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Lettuce Seeds - Summer Bibb - OrganicLettuce Seeds - Summer Bibb - Organic
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Beet Seeds - Cylindra - Organicsmall size packet type seed packaging for - Beet Cylindra Organic
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Vinca Seeds - Mediterranean XP SeriesVinca Seeds - Mediterranean XP Series
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Pepper Seeds - Hot - Purple TigerPepper Seeds - Hot - Purple Tiger
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Pepper Seeds - Hot - Santa Fe Grandemid size pouch type seed packaging for - Pepper Hot Santa Fe Grande
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Cucumber Seeds - Spacemaster (Organic)small size packet type seed packaging for - Cucumber Spacemaster Organic
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Lettuce Seeds - Red Romainesmall size packet type seed packaging for - Lettuce Red Romaine
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Radish Korean Bora King Hybrid mid size pouch type seed packaging for - Radish Korean Bora King Hybrid
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Pumpkin Seeds - Jarrahdale (Organic)mid size pouch type seed packaging for - Tomato Slicing Yellow Perfection Organic
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Zucchini Seeds - Casertasmall size packet type seed packaging for - Zucchini Caserta
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Gomphrena Seeds - Gnome SeriesGomphrena Seeds - Gnome Series
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Sunflower Seeds - Ring of Firemid size pouch type seed packaging for - Zinnia Magellan Series Orange
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Lettuce Seeds - Crisphead - Great Lakes Mesa 659small size packet type seed packaging for - Lettuce Crisphead Great Lakes Mesa 659
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Pumpkin Seeds - White Queensmall size packet type seed packaging for - Pumpkin White Queen
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Watermelon Seeds - Picnic - Cal Sweetmid size pouch type seed packaging for - Watermelon Picnic Cal Sweet
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Petunia Seeds - Picobella Series (pelleted)Petunia Seeds - Picobella Series (pelleted)
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Cabbage Seeds - All Seasons (Organic)small size packet type seed packaging for - Cabbage All Seasons Organic
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Bean Seeds - Bush - Cannellini (Organic)small size packet type seed packaging for - Bean Bush Cannellini Organic
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Sunflower Seeds - Teddy Bearmid size pouch type seed packaging for - Sunflower Teddy Bear
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Tomato Seeds - Slicing - Black RussianTomato Seeds - Slicing - Black Russian
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Lettuce Seeds - Heatwave Mix - Organic
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