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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1650 Items
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Tomato Seeds - Slicing - Brandywine Yellow (Organic)small size packet type seed packaging for - Tomato Slicing Brandywine Yellow Organic
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Tomato Seeds - Cherry - Large Red Cherry (Organic)mid size pouch type seed packaging for - Tomato Cherry Large Red Cherry Organic
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Moonflower Seeds - Tall Night Floweringsmall size packet type seed packaging for - Moonflower Tall Night Flowering
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Tomato Seeds - Slicing - Ace 55 VFmid size pouch type seed packaging for - Tomato Slicing Ace 55 VF
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Tomato Seeds - Slicing - Ace 55 VF
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Basil Seeds - Thai Sweet Large Leafmid size pouch type seed packaging for - Basil Thai Sweet Large Leaf
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Basil Seeds - Red Leaf Holy Basilmid size pouch type seed packaging for - Basil Red Leaf Holy Basil
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Melon Seeds - Charentaissmall size packet type seed packaging for - Melon Charentais
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Tomato Seeds - Slicing - Homesteadsmall size packet type seed packaging for - Tomato Slicing Homestead
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Marigold (Signata) Seeds - Gem SeriesMarigold (Signata) Seeds - Gem Series
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Strawflower Seeds - Tall Double Mixmid size pouch type seed packaging for - Strawflower Tall Double Mix
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Corn Seeds - Sweet - Jubilee Hybridmid size pouch type seed packaging for - Corn Sweet Jubilee Hybrid
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Tomato Seeds - Paste - Giant Garden Paste Hybridmid size pouch type seed packaging for - Tomato Paste Giant Garden Paste Hybrid
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Tomato Seeds - Paste - Giant Garden Paste Hybrid
Starting at $4.89
Tomato Seeds - Cherry - Red Pearmid size pouch type seed packaging for - Tomato Cherry Red Pear
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Charleston Grey Watermelon Charleston Grey Watermelon
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Watermelon Seeds - Picnic - Charleston Grey
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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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Starting at $16.32
Sunflower Seeds - Mexicansmall size packet type seed packaging for - Sunflower Mexican
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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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Tomato Seeds - Slicing - Watermelon Beefsteak (Organic)small size packet type seed packaging for - Tomato Slicing Watermelon Beefsteak Organic
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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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Vinca Seeds - Mediterranean XP SeriesVinca Seeds - Mediterranean XP Series
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Morning Glory Seeds - Heavenly Bluemid size pouch type seed packaging for - Morning Glory Heavenly Blue
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Cucumber Seeds - Spacemaster (Organic)small size packet type seed packaging for - Cucumber Spacemaster Organic
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Wildflower Seeds - Monarch Butterfly MixWildflower Seeds - Monarch Butterfly Mix
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Starting at $3.09
Pumpkin Seeds - Jarrahdale (Organic)mid size pouch type seed packaging for - Tomato Slicing Yellow Perfection Organic
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Starting at $3.59
Okra Seeds - Jambalaya 2.0small size packet type seed packaging for - Okra Jambalaya 20
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Tomato Seeds - Paste - Amish Paste (Organic)
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Aster Seeds - Crego Giant Mixture
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Tomato Seeds - Cherry - Black Cherry (Organic)
Starting at $3.59
Melon Seeds - Charentais (Organic)
Starting at $3.89
Cucumber Seeds - Beit Alpha CMR/MMR
Starting at $3.69
Morning Glory Seeds - Mixed Colors
Starting at $2.99
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