June is the heart of the planting season in cold-winter zones, but it carries a double assignment. The main job is getting every warm-season crop established outdoors. The secondary job — easy to miss — is starting the first wave of fall crops indoors. Leeks, pansies, and violas all have long enough lead times that, if you want them before the October frost, you should sow the seeds now.

Indoors (fresh harvests):

  • Microgreens: peas, broccoli, sunflowers, arugula
  • Sprouts: alfalfa, broccoli, radish, mung
  • Herbs & greens under lights: chives, parsley, mint

Start indoors now for fall: leek, pansy, viola

Transplants to move outdoors (harden first): tomato, pepper, eggplant, basil, sweet potato slips — get anything still waiting indoors out now.

Crops that can be directly sown outdoors in June: beans, corn, cucumber, squash, melons, okra, sunflower, basil, dill, beets, carrots, chard, and nasturtium. Succession-sow radishes and salad greens early in the month while temperatures are still moderate.

Cover crops: buckwheat, cowpeas, red clover — good for any gaps or unplanted beds

Tip: This zone group covers a lot of territory. Nothing replaces talking with experienced gardeners in your area and, of course, watching the weather closely.

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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586 Items
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Corn Seeds - Sweet - Serendipity Bicolor TripleSweet Hybrid (treated)mid size pouch type seed packaging for - Corn Sweet Serendipity Bicolor TripleSweet Hybrid treated
-0
Corn Seeds - Sweet - Serendipity Bicolor TripleSweet Hybrid (treated)
Starting at $18.43
Watermelon Seeds - Giant - Congosmall size packet type seed packaging for - Watermelon Giant Congo
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Heirloom
Watermelon Seeds - Giant - Congo
Starting at $2.99
Bean Seeds - Bush - Jade (Treated)mid size pouch type seed packaging for - Bean Bush Jade Treated
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Bean Seeds - Bush - Jade (Treated)
Starting at $15.06
Beans - Black Turtle (Organic) - Sprouting SeedsBeans - Black Turtle (Organic) - Sprouting Seeds
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Heirloom
Organic
Beans - Black Turtle (Organic) - Sprouting Seeds
Starting at $8.90
Squash Seeds - Winter - Honeybaby Hybridmid size pouch type seed packaging for - Squash Winter Honeybaby Hybrid
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Squash Seeds - Winter - Honeybaby Hybrid
Starting at $4.39
Squash Seeds - Summer - Zucchini Greyzinni Hybridmid size pouch type seed packaging for - Squash Summer Zucchini Greyzinni Hybrid
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Squash Seeds - Summer - Zucchini Greyzinni Hybrid
Starting at $3.99
Sunflower Seeds - ProCut®Sunflower Seeds - ProCut®
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Sunflower Seeds - ProCut®
Starting at $4.29
Melon Seeds - Japanese - Ichiba Kouji Hybrid
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Melon Seeds - Japanese - Ichiba Kouji Hybrid
Starting at $3.99
Squash Seeds - Winter - Delicata Bush AASsmall size packet type seed packaging for - Squash Winter Delicata Bush AAS
-46%
Heirloom
Squash Seeds - Winter - Delicata Bush AAS
Starting at $1.99
Sunflower Seeds - Lemon Queenmid size pouch type seed packaging for - Sunflower Lemon Queen
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Heirloom
Sunflower Seeds - Lemon Queen
Starting at $3.99
Bean Seeds - Bush - Harvestersmall size packet type seed packaging for - Bean Bush Harvester
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Bean Seeds - Bush - Harvester
Starting at $2.99
Squash Seeds - Summer - Zucchini Italian Stripedmid size pouch type seed packaging for - Squash Summer Zucchini Italian Striped
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Squash Seeds - Summer - Zucchini Italian Striped
Starting at $2.99
Melon Seeds - Cantaloupe - Athena Hybridmid size pouch type seed packaging for - Melon Cantaloupe Athena Hybrid
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Melon Seeds - Cantaloupe - Athena Hybrid
Starting at $4.19
Bean Seeds - Bush  - Soybean Cover Crop Seeds (Organic)
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Organic
Bean Seeds - Bush - Soybean Cover Crop Seeds (Organic)
Starting at $3.59
Okra Seeds - Cows Hornmid size pouch type seed packaging for - Okra Cows Horn
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Okra Seeds - Cows Horn
Starting at $2.99
Sunflower Seeds - Sungold Dwarfmid size pouch type seed packaging for - Sunflower Sungold Dwarf
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Sunflower Seeds - Sungold Dwarf
Starting at $3.89
Corn Seeds - Dent - Pencil Cobsmall size packet type seed packaging for - Corn Dent Pencil Cob
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Corn Seeds - Dent - Pencil Cob
Starting at $3.07
Bean Seeds - Bush - Royalty Purple Pod (Organic)mid size pouch type seed packaging for - Bean Bush Royalty Purple Pod Organic
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Organic
Bean Seeds - Bush - Royalty Purple Pod (Organic)
Starting at $3.59
Sunflower Seeds - Skyscrapersmall size packet type seed packaging for - Sunflower Skyscraper
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Heirloom
Sunflower Seeds - Skyscraper
Starting at $3.29
Squash Winter Cushaw Green Stripedmid size pouch type seed packaging for - Squash Winter Cushaw Green Striped
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Squash Seeds - Winter - Cushaw Green Striped
Starting at $2.99
Sorghum Seeds - Multicolored Broomcornmid size pouch type seed packaging for - Sorghum Multicolored Broomcorn
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Staff Favorite
Sorghum Seeds - Multicolored Broomcorn
Starting at $2.99
Melon Seeds - Piel de SapoMelon Seeds - Piel de Sapo
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Heirloom
Melon Seeds - Piel de Sapo
Starting at $2.99
Pinto Beans - Bulk Grains & Foodsmid size pouch type seed packaging for - Pinto Beans Bulk Grains & Foods
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Pinto Beans - Bulk Grains & Foods
Starting at $10.34
Watermelon Seeds - Picnic - Kleckley's Sweetsmall size packet type seed packaging for - Watermelon Picnic Kleckleys Sweet
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Heirloom
Watermelon Seeds - Picnic - Kleckley's Sweet
Starting at $2.99
Watermelon Seeds - Icebox - Yellow Petitesmall size packet type seed packaging for - Watermelon Icebox Yellow Petite
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Heirloom
Watermelon Seeds - Icebox - Yellow Petite
Starting at $3.79
Squash Seeds - Winter - Queensland Bluesmall size packet type seed packaging for - Squash Winter Queensland Blue
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Squash Seeds - Winter - Queensland Blue
Starting at $3.79
Squash Seeds - Lakotasmall size packet type seed packaging for - Squash Lakota
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Squash Seeds - Lakota
Starting at $3.09
Bean Seeds - Bush -  Purple Queenmid size pouch type seed packaging for - Bean Bush Purple Queen
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Bean Seeds - Bush - Purple Queen
Starting at $3.39
Adzuki Bean (Organic) - Bulk Grains & FoodsAdzuki Bean (Organic) - Bulk Grains & Foods
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Starting at $3.49
Squash Seeds - Table Queen Bush Acorn - Organic
Starting at $3.59
Bean Seeds - Bush - Golden Wax (Organic)
Starting at $3.20
Bean Seeds - Pole - Purple Mart Tsu In Yard...
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