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
Legend: H for Heirloom, O for Organic, A for AAS Winner, F for staff favorites
696 Items
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Tomato Seeds - Cherry - Cherry Roma
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Radish Seeds - Pink Summercicle (Organic)
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Radish -  Red Rat's Tail - Microgreen SeedsRadish -  Red Rat's Tail - Microgreen Seeds
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Minute Soil - HydroPod Seed Starter PlugsMinute Soil - HydroPod Seed Starter Plugs
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custom packaging for Seedboy Organic Herb Garden KitSeedboy Organic Herb Garden Kit
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$49.95
contact customer service at 801-491-8700 for instructions help4FT T5 HO 4 Lamp 2.0 LED Grow Light - Sun White Spectrum
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$219.00 $229.00
Bloom Master Water Retention Planter Box KitBloom Master Water Retention Planter Box Kit
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Fruit Picker - Garden Hand ToolsFruit Picker - Garden Hand Tools
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Modular Raised Garden BedModular Raised Garden Bed
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Modular Raised Garden Bed
$58.95
Bird FeederBird Feeder
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$22.61
Tomatillo Seeds - Really Purplesmall size packet type seed packaging for - Tomatillo Really Purple
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Heirloom
Tomatillo Seeds - Really Purple
Starting at $2.99
Dual Lure System Japanese Beetle Bag TrapDual Lure System Japanese Beetle Bag Trap
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Starting at $34.99
Fruit Cage - Anti-Bird NettingFruit Cage - Anti-Bird Netting
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Fruit Cage - Anti-Bird Netting
$101.95
Tomato Seeds - Marmande
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Tomato Seeds - Marmande
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Pepper Seeds - Hot - Cherry Mini Hot F1 Hybrid - Clearance Seeds
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Pepper Seeds - Hot - Cherry Mini Hot F1 Hybrid...
Starting at $40.00
‘Boomr Bag’ Manure-Based Sterile Mushroom Bulk Substrate‘Boomr Bag’ Manure-Based Sterile Mushroom Bulk Substrate
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$28.99
'Boomr Bin' Monotub Mushroom Grow Kit'Boomr Bin' Monotub Mushroom Grow Kit
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$149.99
Barley Seeds - Belford
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Barley Seeds - Belford
Starting at $3.14
Tree Loppers
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Tree Loppers
$44.69
Winter Garden TentWinter Garden Tent
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Winter Garden Tent
$105.95
Gourd Seeds - Small Conical Lattoo
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contact customer service at 801-491-8700 for instructions helpIntegrated Strip T5 4FT LED Mushroom Grow Light - 2 Pack – Blue Sun Spectrum
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Radish - Pink Summercicle (Organic) - Microgreens SeedsRadish - Pink Summercicle (Organic) - Microgreens Seeds
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Lettuce Seeds - Leaf - Red Oakleaf - Clearance Seeds
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‘Spectrum 10’ Organic Multi-Mushroom Capsules‘Spectrum 10’ Organic Multi-Mushroom Capsules
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Corn Seeds - Sweet - Golden Halo F1 HybridCorn Seeds - Sweet - Golden Halo F1 Hybrid
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Starting at $5.09
Small Hanging Hopper FeederSmall Hanging Hopper Feeder
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Lettuce Seeds - Butterhead and Bibb Mix (Organic) - Clearance...
Starting at $40.00
Dried Wild Black Trumpet Mushrooms
$12.50
Squash Seeds - Winter - Butter Belle F1 Hybrid -...
Starting at $20.00
Melon Seeds - Oshiro Uri Numane - Clearance Seeds
Starting at $10.00
Organic Sterilized Grain Bag with Injection Port
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