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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Tomato Seeds - Paste - San Marzano Determinate (Organic)small size packet type seed packaging for - Tomato Paste San Marzano Determinate Organic
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Squash Seeds - Summer - Early White Bush Scallopmid size pouch type seed packaging for - Squash Summer Early White Bush Scallop
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Tomato Seeds - Slicing - Black Krimsmall size packet type seed packaging for - Tomato Slicing Black Krim
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Squash Seeds - Winter - Pink Banana JumboSquash Seeds - Winter - Pink Banana Jumbo
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Melon Seeds - Cantaloupe - Minnesota Midgetmid size pouch type seed packaging for - Melon Cantaloupe Minnesota Midget
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Mustard Seeds - Mizunamid size pouch type seed packaging for - Mustard Mizuna
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Lupine Seeds - Russell Strain Mixturemid size pouch type seed packaging for - Lupine Russell Strain Mixture
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Shiso Herb Seeds (Perilla) - GreenShiso Herb Seeds (Perilla) - Green
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Pumpkin Seeds - Cinderella
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Squash Seeds - Summer - Zucchini Eight Ball Hybridmid size pouch type seed packaging for - Squash Summer Zucchini Eight Ball Hybrid
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Tomato Seeds - Slicing - Brandywine Pink (Organic)Tomato Seeds - Slicing - Brandywine Pink (Organic)
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Lettuce Seeds - Romaine - Little Gem (Organic)mid size pouch type seed packaging for - Lettuce Little Gem Organic
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Bean Seeds - Bush - Slenderettemid size pouch type seed packaging for - Bean Bush Slenderette
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Grow and Store Garden Seeds 16 VarietyGrow and Store Garden Seeds 16 Variety
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Pea Seeds - Perfection Dark Seededsmall size packet type seed packaging for - Pea Perfection Darked
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Rudbeckia Seeds - Black-Eyed Susanmid size pouch type seed packaging for - Rudbeckia Black-Eyed Susan
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Corn Seeds - Sweet - Kandy Korn F1 Hybridmid size pouch type seed packaging for - Corn Sweet Kandy Korn Hybrid
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Celery Seeds - Utah 52-70 Tall Improved - Organicsmall size packet type seed packaging for - Celery Utah 52-70 Tall Improved Organic
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Radish Seeds - White Iciclemid size pouch type seed packaging for - Radish White Icicle
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Shiso Seeds (Perilla) - Green Ohbamid size pouch type seed packaging for - Shiso Perilla Green Ohba
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Pepper Seeds - Hot - Cayenne Long Red Thin (Organic)small size packet type seed packaging for - Pepper Hot Cayenne Long Red Thin Organic
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Sunflower Seeds - Velvet Queenmid size pouch type seed packaging for - Sunflower Velvet Queen
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