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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682 Items
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Pepper Seeds - Sweet - Pretty N Red Hybridmid size pouch type seed packaging for - Pepper Sweet Pretty N Red Hybrid
-0
Pepper Seeds - Sweet - Pretty N Red Hybrid
Starting at $4.99
Sunflower Seeds - Star Chasermid size pouch type seed packaging for - Sunflower Star Chaser
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Sunflower Seeds - Star Chaser
Starting at $3.99
Tomato Seeds - Slicing - Beef Maestro Hybridsmall size packet type seed packaging for - Tomato Slicing Beef Maestro Hybrid
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Tomato Seeds - Slicing - Beef Maestro Hybrid
Starting at $3.99
Allium Bulbs - Mount Everest
-0
Allium Bulbs - Mount Everest
Starting at $22.90
Tomato Seeds - Salad - Containers Choice Green Hybridmid size pouch type seed packaging for - Tomato Salad Containers Choice Green Hybrid
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Tomato Seeds - Salad - Containers Choice Green Hybrid
Starting at $4.89
Peony Bulbs - Sarah BernhardtPeony Bulbs - Sarah Bernhardt
-0
Peony Bulbs - Sarah Bernhardt
Starting at $17.99
Squash Seeds - Winter - Festival F1small size packet type seed packaging for - Squash Winter Festival F1
-52%
Squash Seeds - Winter - Festival F1
Starting at $1.99
Tomato Seeds - Slicing - Early Choice Black F1mid size pouch type seed packaging for - Zinnia Magellan Series Orange
-0
Tomato Seeds - Slicing - Early Choice Black F1
Starting at $4.39
Squash Seeds - Summer - Sunbeam F1small size packet type seed packaging for - Squash Summer Sunbeam F1
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Squash Seeds - Summer - Sunbeam F1
Starting at $3.99
Bearded Iris Bulbs -  Light Blue
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Bearded Iris Bulbs - Light Blue
Starting at $14.99
Corn Seeds - Sweet - Nirvana F1 HybridCorn Seeds - Sweet - Nirvana F1 Hybrid
-0
Corn Seeds - Sweet - Nirvana F1 Hybrid
Starting at $5.09
Pepper Seeds - Sweet - Sweet Ristra F1mid size pouch type seed packaging for - Pepper Sweet Sweet Ristra F1
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Pepper Seeds - Sweet - Sweet Ristra F1
Starting at $4.99
Bearded Iris Bulbs -  Yellow
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Bearded Iris Bulbs - Yellow
Starting at $14.99
Tomato Seeds - Salad - Husky Goldmid size pouch type seed packaging for - Zinnia Magellan Series Orange
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Tomato Seeds - Salad - Husky Gold
Starting at $3.69
Anemone Bulbs - Galilee Pastel Mix
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Anemone Bulbs - Galilee Pastel Mix
Starting at $29.99
Daffodil Bulbs - Large Cupped 'Fortune'
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Daffodil Bulbs - Large Cupped 'Fortune'
Starting at $19.99
Melon Seeds - Cantaloupe -  Incredible Hybridmid size pouch type seed packaging for - Melon Cantaloupe Incredible Hybrid
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Melon Seeds - Cantaloupe - Incredible Hybrid
Starting at $5.09
Pumpkin Seeds - Harvest Bush F1small size packet type seed packaging for - Pumpkin Harvest Bush F1
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Pumpkin Seeds - Harvest Bush F1
Starting at $4.19
Anemone Bulbs - Galilee Pink
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Anemone Bulbs - Galilee Pink
Starting at $29.99
Tulip Bulbs - Darwin Hybrid - Ivory Floradale/Hakuun
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Tulip Bulbs - Darwin Hybrid - Ivory Floradale/Hakuun
Starting at $18.99
Peony Bulbs - Karl RosenfieldPeony Bulbs - Karl Rosenfield
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Peony Bulbs - Karl Rosenfield
Starting at $17.99
Squash Seeds - Winter - Mardi Gras F1 PMTsmall size packet type seed packaging for - Squash Winter Mardi Gras F1 PMT
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Squash Seeds - Winter - Mardi Gras F1 PMT
Starting at $4.29
Easter Lily Bulbs - Miracle
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Easter Lily Bulbs - Miracle
$8.99
Tulip Bulbs - Fringed - MixTulip Bulbs - Fringed - Mix
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Tulip Bulbs - Fringed - Mix
Starting at $18.99
Tulip Bulbs - Parrot - MixTulip Bulbs - Parrot - Mix
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Tulip Bulbs - Parrot - Mix
Starting at $18.99
Lily Bulbs - Asiatic - Red County
$6.25 $12.49
Boysenberry Roots
$18.99
Blueberry Roots - Northland
$19.99
Hops Roots - Nugget
$19.49
Lily Bulbs - Oriental - Sunny Bahamas
$6.25 $12.49
Lily Bulbs - Asiatic - Fata Morgana
$6.25 $12.49
Lily Bulbs - Asiatic - Matrix Orange
$6.25 $12.49
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