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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355 Items
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Radish Seeds - Amethystsmall size packet type seed packaging for - Radish Amethyst
-0
Heirloom
Radish Seeds - Amethyst
Starting at $2.99
Grape Hyacinth Bulbs - Muscari Armeniacum
-0
Heirloom
Grape Hyacinth Bulbs - Muscari Armeniacum
Starting at $19.99
Lettuce Seeds - Leaf - Sunsetsmall size packet type seed packaging for - Lettuce Leaf Sunset
-0
Heirloom
Lettuce Seeds - Leaf - Sunset
Starting at $2.99
Pepper Seeds - Hot - Cuban Chilemid size pouch type seed packaging for - Zinnia Magellan Series Orange
-0
Pepper Seeds - Hot - Cuban Chile
Starting at $4.39
Anemone Bulbs - Carmel White
-0
Anemone Bulbs - Carmel White
Starting at $29.99
Corn Seeds - Popcorn - Calico
-0
Heirloom
Corn Seeds - Popcorn - Calico
Starting at $3.09
Mustard Seeds - Red Capital
-41%
Mustard Seeds - Red Capital
Starting at $1.99
Leaf Radish Seeds - Saisai Purple - Hybridmid size pouch type seed packaging for - Leaf Radish Saisai Purple Hybrid
-0
Leaf Radish Seeds - Saisai Purple - Hybrid
Starting at $3.99
Anemone Bulbs - Carmel Bordeaux
-0
Anemone Bulbs - Carmel Bordeaux
Starting at $29.99
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
Anemone Bulbs - Galilee Pastel Mix
-0
Anemone Bulbs - Galilee Pastel Mix
Starting at $29.99
Radish Seeds - Red Rat's Tail
-0
Heirloom
Radish Seeds - Red Rat's Tail
Starting at $2.79
Wildflower Seeds - Backyard Bird Lover's Mix
-42%
Wildflower Seeds - Backyard Bird Lover's Mix
Starting at $1.99
Bean Seeds - Bush - Red Swan
-0
Bean Seeds - Bush - Red Swan
Starting at $3.29
Tulip Bulbs - Fringed - MixTulip Bulbs - Fringed - Mix
-0
Tulip Bulbs - Fringed - Mix
Starting at $18.99
Tulip Bulbs - Parrot - MixTulip Bulbs - Parrot - Mix
-0
Tulip Bulbs - Parrot - Mix
Starting at $18.99
Tulip Bulbs - Triumph - MixTulip Bulbs - Triumph - Mix
-0
Tulip Bulbs - Triumph - Mix
Starting at $17.99
Tulip Bulbs - Darwin Hybrid - Purple Pride
-0
Tulip Bulbs - Darwin Hybrid - Purple Pride
Starting at $17.99
Mustard Seeds - Red Capital - Microgreens Seeds
-47%
Heirloom
Mustard Seeds - Red Capital - Microgreens Seeds
Starting at $10.17
custom box packaging for Seed Starter Kit - PetuniaSeed Starter Kit - Petunia
-0
Seed Starter Kit - Petunia
$23.14
custom packaging for Bloom Master Hanging Basket Kit - PetuniaBloom Master Hanging Basket Kit - Petunia
-0
Bloom Master Hanging Basket Kit - Petunia
$33.95
Radish -  Red Rat's Tail - Microgreen SeedsRadish -  Red Rat's Tail - Microgreen Seeds
-0
Heirloom
Radish - Red Rat's Tail - Microgreen Seeds
Starting at $2.79
Calla Lily Bulbs - Mixture
$14.00 $27.99
Onion - Southport Red Globe - Microgreens Seeds
Starting at $9.04
Grape Roots - Seedless - Concord
$10.50 $20.99
Blackberry Roots - Chester
$21.99
Elderberry Roots
$19.99
Boysenberry Roots
$18.99
Iresine Seeds - Purple Lady
$22.91
Pepper Seeds - Hot - Jalapeno Purples
Starting at $3.59
Artichoke Seeds - Purple Romagna - Clearance Seeds
Starting at $15.33
Pepper Seeds - Hot - Black Hungarian (Organic)
Starting at $3.89
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