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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3004 Items
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Chrysanthemum Greens Seeds - Oasismid size pouch type seed packaging for - Chrysanthemum Greens Oasis
-0
Heirloom
Chrysanthemum Greens Seeds - Oasis
Starting at $3.99
Winter Rye (Organic) - Bulk Grains & FoodsWinter Rye (Organic) - Bulk Grains & Foods
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Organic
Winter Rye (Organic) - Bulk Grains & Foods
Starting at $7.84
Marigold (Signata) Seeds - Gem SeriesMarigold (Signata) Seeds - Gem Series
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Marigold (Signata) Seeds - Gem Series
Starting at $3.69
Strawflower Seeds - Tall Double Mixmid size pouch type seed packaging for - Strawflower Tall Double Mix
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Strawflower Seeds - Tall Double Mix
Starting at $2.99
Corn Seeds - Sweet - Jubilee Hybridmid size pouch type seed packaging for - Corn Sweet Jubilee Hybrid
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Corn Seeds - Sweet - Jubilee Hybrid
Starting at $3.99
Pepper Seeds - Hot - Jalapeno Gigantia F1small size packet type seed packaging for - Pepper Hot Jalapeno Gigantia F1
-0
Pepper Seeds - Hot - Jalapeno Gigantia F1
Starting at $3.99
Alyssum Seeds - Basket of Goldmid size pouch type seed packaging for - Alyssum Basket of Gold
-0
Alyssum Seeds - Basket of Gold
Starting at $2.99
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
Bells of Ireland Seedsmid size pouch type seed packaging for - Bells of Ireland
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Bells of Ireland Seeds
Starting at $2.99
Lettuce Seeds - Leaf - Green Icesmall size packet type seed packaging for - Lettuce Leaf Green Ice
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Heirloom
Lettuce Seeds - Leaf - Green Ice
Starting at $2.99
Carrot Seeds - Kyoto Redmid size pouch type seed packaging for - Carrot Kyoto Red
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Heirloom
Carrot Seeds - Kyoto Red
Starting at $3.99
Tomato Seeds - Cherry - Red Pearmid size pouch type seed packaging for - Tomato Cherry Red Pear
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Heirloom
Tomato Seeds - Cherry - Red Pear
Starting at $2.99
Charleston Grey Watermelon Charleston Grey Watermelon
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Heirloom
Watermelon Seeds - Picnic - Charleston Grey
Starting at $2.79
Pansy Seeds - Cool Wave SeriesPansy Seeds - Cool Wave Series
-0
Pansy Seeds - Cool Wave Series
Starting at $4.89
Onion Seeds - Short - Early White Grano PRROnion Seeds - Short - Early White Grano PRR
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Heirloom
Onion Seeds - Short - Early White Grano PRR
Starting at $2.99
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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Corn Seeds - Sweet - Peaches and Cream Hybrid (treated)
Starting at $16.32
Sunflower Seeds - Mexicansmall size packet type seed packaging for - Sunflower Mexican
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Heirloom
Sunflower Seeds - Mexican
Starting at $3.99
Pepper Seeds - Hot - Korean - Gochujang King - Hybrid
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Pepper Seeds - Hot - Korean - Gochujang King -...
Starting at $3.99
Melon Seeds - Honeydew - Green Flesh (Organic)small size packet type seed packaging for - Melon Honeydew Green Flesh Organic
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Heirloom
Organic
Melon Seeds - Honeydew - Green Flesh (Organic)
Starting at $3.59
Bean Seeds - Black Garbanzo - Organic - MicrogreensBean Seeds - Black Garbanzo - Organic - Microgreens
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Heirloom
Organic
Bean Seeds - Black Garbanzo - Organic - Microgreens
Starting at $3.59
Basil Seeds - Cinnamonsmall size packet type seed packaging for - Basil Cinnamon
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Heirloom
Basil Seeds - Cinnamon
Starting at $2.99
Carrot Seeds - Royal Chantenaysmall size packet type seed packaging for - Carrot Royal Chantenay
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Heirloom
Carrot Seeds - Royal Chantenay
Starting at $2.99
Tomato Seeds - Slicing - Watermelon Beefsteak (Organic)small size packet type seed packaging for - Tomato Slicing Watermelon Beefsteak Organic
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Heirloom
Organic
Tomato Seeds - Slicing - Watermelon Beefsteak (Organic)
Starting at $3.59
Sweet William Seeds - Double Mixturemid size pouch type seed packaging for - Sweet William Double Mixture
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Sweet William Seeds - Double Mixture
Starting at $2.99
Tomato Seeds - Slicing - Brandywine Red Potato Leaf (Organic)mid size pouch type seed packaging for - Tomato Slicing Yellow Perfection Organic
-0
Heirloom
Organic
Tomato Seeds - Slicing - Brandywine Red Potato Leaf (Organic)
Starting at $3.59
Lettuce Seeds - Summer Bibb - OrganicLettuce Seeds - Summer Bibb - Organic
-0
Heirloom
Organic
Lettuce Seeds - Summer Bibb - Organic
Starting at $3.89
Lettuce Seeds - Jericho - Organic
Starting at $4.39
Tomato Seeds - Cherry - Black Cherry (Organic)
Starting at $3.59
Onion Sets - Spanish Yellow
$6.48 $12.95
Melon Seeds - Charentais (Organic)
Starting at $3.89
Carrot Seeds - Bambino (Organic)
Starting at $3.59
Cucumber Seeds - Beit Alpha CMR/MMR
Starting at $3.69
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