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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2358 Items
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Beet Seeds - Ruby Queensmall size packet type seed packaging for - Beet Ruby Queen
-0
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Beet Seeds - Ruby Queen
Starting at $2.99
Gourds Seeds - Luffa Sponge
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Gourds Seeds - Luffa Sponge
Starting at $3.99
Bean Seeds - Pole - Winged Beanmid size pouch type seed packaging for - Bean Pole Winged Bean
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Starting at $3.99
Watermelon Seeds - Picnic - Jubileemid size pouch type seed packaging for - Watermelon Picnic Jubilee
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Watermelon Seeds - Picnic - Jubilee
Starting at $2.99
Beet Seeds - Early Wonder Tall Topmid size pouch type seed packaging for - Beet Early Wonder Tall Top
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Beet Seeds - Early Wonder Tall Top
Starting at $2.99
Tomato Seeds - Slicing - Beefsteak IndeterminateTomato Seeds - Slicing - Beefsteak Indeterminate
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Tomato Seeds - Slicing - Beefsteak Indeterminate
Starting at $2.99
Pepper Seeds - Sweet - Horizon Orangemid size pouch type seed packaging for - Pepper Sweet Horizon Orange
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Pepper Seeds - Sweet - Horizon Orange
Starting at $3.39
Pepper Seeds - Sweet - Red Cherry Sweetmid size pouch type seed packaging for - Pepper Sweet Red Cherry Sweet
-33%
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Pepper Seeds - Sweet - Red Cherry Sweet
Starting at $1.99
Pepper Seeds - Sweet - Sunset Italian Mix (Organic)small size packet type seed packaging for - Pepper Sweet Sunset Italian Mix Organic
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Organic
Pepper Seeds - Sweet - Sunset Italian Mix (Organic)
Starting at $4.19
Pumpkin Seeds - Jack Be Little
-44%
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Pumpkin Seeds - Jack Be Little
Starting at $1.99
Carrot Seeds - Imperator 58mid size pouch type seed packaging for - Carrot Imperator 58
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Carrot Seeds - Imperator 58
Starting at $2.99
Tomato Seeds - Cherry - Sweetiemid size pouch type seed packaging for - Tomato Cherry Sweetie
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Tomato Seeds - Cherry - Sweetie
Starting at $3.39
Cucumber Seeds - Marketmore 76 (Organic)small size packet type seed packaging for - Cucumber Marketmore 76 Organic
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Organic
Cucumber Seeds - Marketmore 76 (Organic)
Starting at $3.59
Pepper Seeds - Sweet - Keystone Resistant Giantmid size pouch type seed packaging for - Pepper Sweet Keystone Resistant Giant
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Pepper Seeds - Sweet - Keystone Resistant Giant
Starting at $2.99
Corn Seeds - Sweet - (su) Early Sunglow Hybridmid size pouch type seed packaging for - Corn Sweet su Early Sunglow Hybrid
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Corn Seeds - Sweet - (su) Early Sunglow Hybrid
Starting at $4.29
Pepper Seeds - Sweet - Pepperoncini Italiansmall size packet type seed packaging for - Pepper Sweet Pepperoncini Italian
-44%
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Pepper Seeds - Sweet - Pepperoncini Italian
Starting at $1.99
Tomato Seeds - Slicing - Red Ponderosa Beefsteak (Organic)small size packet type seed packaging for - Tomato Slicing Red Ponderosa Beefsteak Organic
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Starting at $3.79
Kohlrabi Seeds - Early White ViennaKohlrabi Seeds - Early White Vienna
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Starting at $2.99
Soybean - Yellow (Organic) - Sprouting Seedssmall size packet type seed packaging for - Soybean Yellow Organic Sprouting
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Starting at $3.59
Pea Seeds - Snow - Mammoth Melting Sugar Podmid size pouch type seed packaging for - Pea Snow Mammoth Melting Sugar Pod
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Pea Seeds - Snow - Mammoth Melting Sugar Pod
Starting at $3.39
Cabbage Seeds - Mammoth Red Rocksmall size packet type seed packaging for - Cabbage Mammoth Red Rock
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Cabbage Seeds - Mammoth Red Rock
Starting at $2.99
Cucumber Seeds - Homemade Pickles (Organic)small size packet type seed packaging for - Cucumber Homemade Pickles Organic
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Cucumber Seeds - Homemade Pickles (Organic)
Starting at $3.59
Corn Seeds - Sweet - Serendipity Bicolor TripleSweet Hybridmid size pouch type seed packaging for - Corn Sweet Serendipity Bicolor TripleSweet Hybrid
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Corn Seeds - Sweet - Serendipity Bicolor TripleSweet Hybrid
Starting at $5.79
Pepper - Sweet - Lilac Bellmid size pouch type seed packaging for - Pepper Sweet Lilac Bell
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Pepper - Sweet - Lilac Bell
Starting at $2.99
Onion Seeds - Short - Red Burgundymid size pouch type seed packaging for - Onion Short Red Burgundy
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Onion Seeds - Short - Red Burgundy
Starting at $2.99
Lettuce Seeds - Leaf - Red Sailsmid size pouch type seed packaging for - Lettuce Leaf Red Sails
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Lettuce Seeds - Leaf - Red Sails
Starting at $2.99
Cabbage Seeds - Red Acre (Organic)
Starting at $3.69
Roselle Seeds - Asian Sour Leaf (Hibiscus)
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Okra Seeds - Clemson Spineless (Organic)
Starting at $3.59
Kale Seeds - White Russian
Starting at $2.99
Pak Choi Seeds - White Stem - Organic
Starting at $3.99
Squash Seeds - Summer - Zucchini, Endurance BC, F1
Starting at $3.99
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