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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No-Till Forage Friendly Cover Crop MixNo-Till Forage Friendly Cover Crop Mix
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Adzuki Bean (Organic) - Sprouting SeedsAdzuki Bean (Organic) - Sprouting Seeds
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Carrot Seeds - Purplesmall size packet type seed packaging for - Carrot Purple
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Wheat - Hard Red Winter (Organic) - Sprouting SeedsWheat - Hard Red Winter (Organic) - Sprouting Seeds
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Pepper Seeds - Hot - Habanero Orangesmall size packet type seed packaging for - Pepper Hot Habanero Orange
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Wild Bergamot Seeds - Bee Balmmid size pouch type seed packaging for - Wild Bergamot Bee Balm
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Wildflower Seeds - Bee MixWildflower Seeds - Bee Mix
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Pepper Seeds - Sweet - Mini Bell YellowPepper Seeds - Sweet - Mini Bell Yellow
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Lemon Balm Seeds (Organic)small size packet type seed packaging for - Lemon Balm Organic
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Radish Seeds - Purple Plummid size pouch type seed packaging for - Radish Purple Plum
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Radish Seeds - Purple Plum
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Swiss Chard Seeds - Lucullus
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Squash Seeds - Summer - Golden Glory Hybridmid size pouch type seed packaging for - Squash Summer Golden Glory Hybrid
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Lemon Mint Seedsmid size pouch type seed packaging for - Lemon Mint
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Tomato Seeds - Slicing - Brandywine PinkTomato Seeds - Slicing - Brandywine Pink
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Tomato Seeds - Paste - La Roma IV HybridTomato Seeds - Paste - La Roma IV Hybrid
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Dill Seeds - Mammoth Long Islandmid size pouch type seed packaging for - Dill Mammoth Long Island
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Impatiens Seeds - Accent SeriesImpatiens Seeds - Accent Series
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Corn Salad (Mache) Seeds - Dutch Broad Leavedmid size pouch type seed packaging for - Corn Salad Mache Dutch Broad Leaved
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Tomato Seeds - Cherry - Rainbow Cherry Mix (Organic)mid size pouch type seed packaging for - Tomato Slicing Yellow Perfection Organic
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Shiso Herb Seeds (Perilla) - Purple (Red)Shiso Herb Seeds (Perilla) - Purple (Red)
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Tomato Seeds - Slicing - Black Krim (Organic)small size packet type seed packaging for - Tomato Slicing Black Krim Organic
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Basil Seeds - Lemonmid size pouch type seed packaging for - Basil Lemon
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Pea Seeds - Snap - Sugar Annmid size pouch type seed packaging for - Pea Snap Sugar Ann
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Purslane Seeds - Greenmid size pouch type seed packaging for - Purslane Green
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Tray Insert - 18 CellTray Insert - 18 Cell
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Starting at $17.30
Eggplant Seeds - Long Purple (Organic)
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Starting at $3.59
Lettuce Seeds - Leaf - Ruby Redmid size pouch type seed packaging for - Lettuce Leaf Ruby Red
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Rutabaga Seeds - American Purple Top
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Seed Assortment Medicinal and Herbal Tea DeluxeSeed Assortment Medicinal and Herbal Tea Premium Collage Comp
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Nasturtium - Empress of India - Microgreens SeedsNasturtium - Empress of India - Microgreens Seeds
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Mighty Mustard® Trifecta Power Blend - Cover Crop Seeds
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Broccoli Seeds - Raab - Spring Rapini (Organic)
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