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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231 Items
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Echinacea Seeds - Cheyenne Spiritmid size pouch type seed packaging for - Echinacea Cheyenne Spirit
-0
AAS Winner
Echinacea Seeds - Cheyenne Spirit
Starting at $6.79
All Perennial Flower Seeds MixAll Perennial Flower Seeds Mix
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All Perennial Flower Seeds Mix
Starting at $3.99
Cosmos Seeds - Bright Lightsmid size pouch type seed packaging for - Cosmos Bright Lights
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Cosmos Seeds - Bright Lights
Starting at $2.99
Zinnia Seeds - State Fair Mixmid size pouch type seed packaging for - Zinnia State Fair Mix
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Zinnia Seeds - State Fair Mix
Starting at $3.39
Zinnia Seeds - Thumbelina Mixturemid size pouch type seed packaging for - Zinnia Thumbelina Mixture
-0
AAS Winner
Zinnia Seeds - Thumbelina Mixture
Starting at $2.99
Coleus Seeds - Rainbow Mixturemid size pouch type seed packaging for - Coleus Rainbow Mixture
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Coleus Seeds - Rainbow Mixture
Starting at $2.99
Tomato Seeds - Slicing - Heirloom Rainbow Blend (Organic)mid size pouch type seed packaging for - Tomato Slicing Heirloom Rainbow Blend Organic
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Heirloom
Organic
Tomato Seeds - Slicing - Heirloom Rainbow Blend (Organic)
Starting at $3.59
Gourds Seeds - Large Mixmid size pouch type seed packaging for - Gourds Large Mix
-0
Heirloom
Gourds Seeds - Large Mix
Starting at $3.29
Wildflower Seeds - Partial Shade MixWildflower Seeds - Partial Shade Mix
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Wildflower Seeds - Partial Shade Mix
Starting at $2.99
Gourds Seeds - Small Mixmid size pouch type seed packaging for - Gourds Small Mix
-0
Heirloom
Gourds Seeds - Small Mix
Starting at $3.29
Radish Seeds - Easter Egg BlendRadish Seeds - Easter Egg Blend
-0
Heirloom
Radish Seeds - Easter Egg Blend
Starting at $2.99
Biblical Bread Grain Mix (Organic) - Bulk Grains & FoodsBiblical Bread Grain Mix (Organic) - Bulk Grains & Foods
-0
Heirloom
Organic
Biblical Bread Grain Mix (Organic) - Bulk Grains & Foods
Starting at $11.82
Calendula Seeds - Solar Flashback Mix - Organic
-0
Organic
Calendula Seeds - Solar Flashback Mix - Organic
Starting at $4.39
Pepper Seeds - Sweet - Mini Belle Mixsmall size packet type seed packaging for - Pepper Sweet Mini Belle Mix
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Pepper Seeds - Sweet - Mini Belle Mix
Starting at $2.99
Coleus Seeds - Jazz Combo Mixmid size pouch type seed packaging for - Coleus Jazz Combo Mix
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Coleus Seeds - Jazz Combo Mix
Starting at $4.19
No-Till Pollinator Friendly Cover Crop Mix (Organic)No-Till Pollinator Friendly Cover Crop Mix (Organic)
-0
Organic
No-Till Pollinator Friendly Cover Crop Mix (Organic)
Starting at $6.41
Wildflower Seeds - Dry Land MixWildflower Seeds - Dry Land Mix
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Wildflower Seeds - Dry Land Mix
Starting at $3.09
Strawflower Seeds - Tall Double Mixmid size pouch type seed packaging for - Strawflower Tall Double Mix
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Strawflower Seeds - Tall Double Mix
Starting at $2.99
Sweet William Seeds - Double Mixturemid size pouch type seed packaging for - Sweet William Double Mixture
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Sweet William Seeds - Double Mixture
Starting at $2.99
Wildflower Seeds - Monarch Butterfly MixWildflower Seeds - Monarch Butterfly Mix
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Wildflower Seeds - Monarch Butterfly Mix
Starting at $3.09
Four O Clock Seeds - Marvel of Peru Mixmid size pouch type seed packaging for - Four O Clock Marvel of Peru Mix
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Four O Clock Seeds - Marvel of Peru Mix
Starting at $2.99
Pepper Seeds - Hot - Caribbean Blendsmall size packet type seed packaging for - Pepper Hot Caribbean Blend
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Pepper Seeds - Hot - Caribbean Blend
Starting at $2.99
Aster Seeds - Powderpuff Mixmid size pouch type seed packaging for - Aster Powderpuff Mix
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Aster Seeds - Powderpuff Mix
Starting at $2.99
Flower Seeds - Beneficial Bug Mixsmall size packet type seed packaging for - Flower Beneficial Bug Mix
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Flower Seeds - Beneficial Bug Mix
Starting at $2.99
Lettuce Seeds - Fall and Winter Mix (Organic)small size packet type seed packaging for - Lettuce Fall and Winter Mix Organic
-0
Organic
Lettuce Seeds - Fall and Winter Mix (Organic)
Starting at $3.59
Beet Seeds - Gourmet Blendsmall size packet type seed packaging for - Beet Gourmet Blend
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Beet Seeds - Gourmet Blend
Starting at $2.99
Aster Seeds - Crego Giant Mixture
Starting at $2.99
Morning Glory Seeds - Mixed Colors
Starting at $2.99
Lettuce Seeds - Heatwave Mix - Organic
Starting at $3.59
Tomato Seeds - Slicing - Heirloom Rainbow Blend
Starting at $2.99
Cleome Seeds - Queen Mixture
Starting at $2.99
Beet - Detroit Mix (Organic) - Microgreens Seeds
Starting at $12.03
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