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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4042 Items
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Lettuce Seeds - Super Red Romainesmall size packet type seed packaging for - Lettuce Super Red Romaine
-0
Heirloom
Lettuce Seeds - Super Red Romaine
Starting at $2.99
Gourds Seeds - Birdhousemid size pouch type seed packaging for - Gourds Birdhouse
-0
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Gourds Seeds - Birdhouse
Starting at $2.99
Italian Dandelion Seedsmid size pouch type seed packaging for - Italian Dandelion
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Italian Dandelion Seeds
Starting at $2.99
Sweet Protein Mix - Organic - Sprouting SeedsSweet Protein Mix - Organic - Sprouting Seeds
-0
Heirloom
Organic
Sweet Protein Mix - Organic - Sprouting Seeds
Starting at $6.60
Onion Seeds - Long - White Sweet Spanishmid size pouch type seed packaging for - Onion Long White Sweet Spanish
-0
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Onion Seeds - Long - White Sweet Spanish
Starting at $2.99
African Marigold Seeds - Taishan SeriesAfrican Marigold Seeds - Taishan Series
-0
African Marigold Seeds - Taishan Series
Starting at $3.79
Mixed Greens Seeds - Mesclun Mix (Organic)
-0
Heirloom
Organic
Mixed Greens Seeds - Mesclun Mix (Organic)
Starting at $3.59
Collards Seeds - Morris Headingmid size pouch type seed packaging for - Collards Morris Heading
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Collards Seeds - Morris Heading
Starting at $2.99
Pepper Seeds - Hot - Big JimPepper Seeds - Hot - Big Jim
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Pepper Seeds - Hot - Big Jim
Starting at $2.99
Corn Seeds - Flour - Painted Mountain (Organic)small size packet type seed packaging for - Corn Flour Painted Mountain Organic
-0
Heirloom
Organic
Corn Seeds - Flour - Painted Mountain (Organic)
Starting at $4.76
5 Gallon Bucket with Lid5 Gallon Bucket with Lid
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5 Gallon Bucket with Lid
Starting at $14.06
Garlic Bulbs - Fall - Hardneck - Blue MusicGarlic Bulbs - Fall - Hardneck - Blue Music
-0
Garlic Bulbs - Fall - Hardneck - Blue Music
$17.99
Celery TendercrispCelery Seeds - Tendercrisp
-0
Heirloom
Celery Seeds - Tendercrisp
Starting at $2.99
Beet Seeds - Golden - Organicsmall size packet type seed packaging for - Beet Golden Organic
-0
Heirloom
Organic
Beet Seeds - Golden - Organic
Starting at $3.59
Bean Seeds - Pole - Scarlet Runnermid size pouch type seed packaging for - Bean Pole Scarlet Runner
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Heirloom
Bean Seeds - Pole - Scarlet Runner
Starting at $2.99
50,000+ Emergency Heirloom Storage Seeds - Long Term Storage Can50,000+ Emergency Heirloom Storage Seeds - Long Term Storage Can
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50,000+ Emergency Heirloom Storage Seeds - Long Term Storage Can
Starting at $44.56
custom designed box packaging for Mini Pet Grass KitMini Pet Grass Kit
-0
Organic
Mini Pet Grass Kit
Starting at $7.29
Sorrel Garden Large Leaf
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Sorrel Seeds - Garden Large Leaf
Starting at $2.99
Pumpkin Seeds - Dills Atlantic Giantmid size pouch type seed packaging for - Pumpkin Dills Atlantic Giant
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Pumpkin Seeds - Dills Atlantic Giant
Starting at $3.79
Cabbage - Golden Acre - Microgreens SeedsCabbage - Golden Acre - Microgreens Seeds
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Cabbage - Golden Acre - Microgreens Seeds
Starting at $6.23
Conventional Heirloom Basic Garden - 15 PackConventional Heirloom Basic Garden - 15 Pack
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Conventional Heirloom Basic Garden - 15 Pack
$29.57
Organic Leafy Greens 7 Pack Organic Leafy Greens 7 Pack
-47%
Heirloom
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Organic Leafy Greens Seed Assortment - 7 Pack
$11.29 $21.41
Cucumber Seeds - Spacemaster 80mid size pouch type seed packaging for - Cucumber Spacemaster 80
-28%
AAS Winner
Heirloom
Cucumber Seeds - Spacemaster 80
Starting at $1.99
Mittleider Magic Micro-Nutrient Mix packaged in 2 bags
-0
Mittleider Magic Micro-Nutrient Mix
Starting at $15.95
Portulaca Seeds - Double Mix
Starting at $2.99
Onion Seeds - Short - Red Grano
Starting at $2.99
Dill Seeds - Dukat
Starting at $2.99
Cucumber Seeds - Metki Pale Green Armenian Yard-Long
Starting at $2.99
Marshmallow Herb Seeds
Starting at $2.99
Lettuce Seeds - Romaine / COS - Winter Density
Starting at $2.99
Dandelion Seeds - True (Wild)
Starting at $3.39
Cabbage Seeds - Golden Acre (Organic)
Starting at $3.59
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