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
Legend: H for Heirloom, O for Organic, A for AAS Winner, F for staff favorites
632 Items
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Bean Seeds - Bush - Taylor Dwarf HorticultureBean Seeds - Bush - Taylor Dwarf Horticulture
-0
Heirloom
Bean Seeds - Bush - Taylor Dwarf Horticulture
Starting at $3.29
Corn Seeds - Dent - Truckers Favorite Whitemid size pouch type seed packaging for - Corn Dent Truckers Favorite White
-0
Heirloom
Corn Seeds - Dent - Truckers Favorite White
Starting at $3.69
Beet Seed - White Detroitsmall size packet type seed packaging for - Beet White Detroit
-0
Beet Seed - White Detroit
Starting at $3.59
Bean Seeds - Bush - Cherokee Black Waxsmall size packet type seed packaging for - Bean Bush Cherokee Black Wax
-33%
Heirloom
Bean Seeds - Bush - Cherokee Black Wax
Starting at $1.99
Beet Seeds - Gourmet Blendsmall size packet type seed packaging for - Beet Gourmet Blend
-0
Beet Seeds - Gourmet Blend
Starting at $2.99
Corn Seeds - Dent - Truckers Favorite Yellowmid size pouch type seed packaging for - Corn Dent Truckers Favorite Yellow
-0
Heirloom
Corn Seeds - Dent - Truckers Favorite Yellow
Starting at $3.09
Beet Seeds - Red Ace Hybridsmall size packet type seed packaging for - Beet Red Ace Hybrid
-0
Beet Seeds - Red Ace Hybrid
Starting at $3.99
Carrot Seeds - Solar Yellow - Organicsmall size packet type seed packaging for - Carrot Solar Yellow Organic
-0
Heirloom
Organic
Carrot Seeds - Solar Yellow - Organic
Starting at $3.59
Watermelon Seeds - Picnic - Dixie Queenmid size pouch type seed packaging for - Watermelon Picnic Dixie Queen
-0
Heirloom
Watermelon Seeds - Picnic - Dixie Queen
Starting at $2.99
Corn Seeds - Sweet - Ambrosia Hybrid (treated)mid size pouch type seed packaging for - Corn Sweet Ambrosia Hybrid treated
-0
Corn Seeds - Sweet - Ambrosia Hybrid (treated)
Starting at $14.32
Bean Seeds - Bush -  Fordhook 242 Lima
-0
Heirloom
Bean Seeds - Bush - Fordhook 242 Lima
Starting at $3.07
Carrot Seeds - Cosmic Purple - Organicsmall size packet type seed packaging for - Carrot Cosmic Purple Organic
-0
Heirloom
Organic
Carrot Seeds - Cosmic Purple - Organic
Starting at $3.59
Melon Seeds - Korean - Dae Jang Geum Hybridmid size pouch type seed packaging for - Melon Korean Dae Jang Geum Hybrid
-0
Melon Seeds - Korean - Dae Jang Geum Hybrid
Starting at $3.99
Melon Seeds - Honeydew - Orange Fleshmid size pouch type seed packaging for - Melon Honeydew Orange Flesh
-0
Heirloom
Melon Seeds - Honeydew - Orange Flesh
Starting at $2.99
Zucchini Seeds - Roundsmall size packet type seed packaging for - Zucchini Round
-0
Heirloom
Zucchini Seeds - Round
Starting at $2.99
Sunflower Seeds - Maximiliansmall size packet type seed packaging for - Sunflower Maximilian
-0
Sunflower Seeds - Maximilian
Starting at $2.99
Bean Seeds - Pole - White Seeded Yard Longmid size pouch type seed packaging for - Bean Pole Whiteed Yard Long
-0
Heirloom
Bean Seeds - Pole - White Seeded Yard Long
Starting at $3.99
Beet Seeds - Red Mammoth Mangelsmall size packet type seed packaging for - Beet Red Mammoth Mangel
-0
Heirloom
Beet Seeds - Red Mammoth Mangel
Starting at $2.99
Radish Seeds - Crimson Giantsmall size packet type seed packaging for - Radish Crimson Giant
-0
Heirloom
Radish Seeds - Crimson Giant
Starting at $2.99
Carrot Seeds - Purple Haze Hybridmid size pouch type seed packaging for - Carrot Purple Haze Hybrid
-0
AAS Winner
Carrot Seeds - Purple Haze Hybrid
Starting at $3.99
Squash Seeds - Japanese, Winter - Hokkori - Hybridmid size pouch type seed packaging for - Squash Japanese Winter Hokkori Hybrid
-0
Squash Seeds - Japanese, Winter - Hokkori - Hybrid
Starting at $3.99
Squash Seeds - Summer - Garden Spineless Zucchini Hybridsmall size packet type seed packaging for - Squash Summer Garden Spineless Zucchini Hybrid
-51%
Squash Seeds - Summer - Garden Spineless Zucchini Hybrid
Starting at $1.99
Corn Seeds - Sweet - Incredible R/M Hybridmid size pouch type seed packaging for - Corn Sweet Incredible R/M Hybrid
-0
Corn Seeds - Sweet - Incredible R/M Hybrid
Starting at $3.99
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
-0
Heirloom
Watermelon Seeds - Giant - Congo
Starting at $2.99
Radish Seeds - Easter Egg - Organicsmall size packet type seed packaging for - Radish Easter Egg Organic
-0
Heirloom
Organic
Radish Seeds - Easter Egg - Organic
Starting at $3.59
Carrot Seeds - Nantes Mini CoreCarrot Seeds - Nantes Mini Core
-0
Heirloom
Carrot Seeds - Nantes Mini Core
Starting at $2.99
Radish Seeds - Champion - Organicsmall size packet type seed packaging for - Radish Champion Organic
-0
Heirloom
Organic
Radish Seeds - Champion - Organic
Starting at $3.59
Squash Seeds - Winter - Honeybaby Hybridmid size pouch type seed packaging for - Squash Winter Honeybaby Hybrid
-0
Squash Seeds - Winter - Honeybaby Hybrid
Starting at $4.39
Melon Seeds - Casaba - Golden Beauty
Starting at $2.99
Radish Seeds - China Rose - Organic
Starting at $5.97
Bean Seeds - Bush - Blue Lake 274 (Treated)
$10.82
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