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
446 Items
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Beet Seeds - Ruby Queen (Organic)mid size pouch type seed packaging for - Beet Ruby Queen Organic
-0
AAS Winner
Heirloom
Organic
Beet Seeds - Ruby Queen (Organic)
Starting at $3.59
Melon Seeds - Cantaloupe - Edisto 47mid size pouch type seed packaging for - Melon Cantaloupe Edisto 47
-0
Heirloom
Melon Seeds - Cantaloupe - Edisto 47
Starting at $2.99
Watermelon Seeds - Picnic - AU Producersmall size packet type seed packaging for - Watermelon Picnic AU Producer
-0
Heirloom
Watermelon Seeds - Picnic - AU Producer
Starting at $3.59
Bean Seeds - Pole - Purple Moon Hyacinthmid size pouch type seed packaging for - Bean Pole Purple Moon Hyacinth
-0
Heirloom
Bean Seeds - Pole - Purple Moon Hyacinth
Starting at $3.99
Melon Seeds - Bananasmall size packet type seed packaging for - Melon Banana
-33%
Heirloom
Melon Seeds - Banana
Starting at $1.99
Squash Seeds - Summer - Trieste White ZucchiniSquash Seeds - Summer - Trieste White Zucchini
-0
Squash Seeds - Summer - Trieste White Zucchini
Starting at $2.99
Melon Seeds - Casaba - Bidwellmid size pouch type seed packaging for - Melon Casaba Bidwell
-0
Heirloom
Melon Seeds - Casaba - Bidwell
Starting at $3.39
Corn Seeds - Sweet -  (su) Early Sunglow Hybrid (treated)mid size pouch type seed packaging for - Corn Sweet su Early Sunglow Hybrid treated
-0
Corn Seeds - Sweet - (su) Early Sunglow Hybrid (treated)
Starting at $12.84
Squash Seeds - Summer - 49er F1small size packet type seed packaging for - Squash Summer 49er F1
-0
Squash Seeds - Summer - 49er F1
Starting at $3.99
Squash Seeds - Winter - Hubbard Blue - Organicsmall size packet type seed packaging for - Squash Winter Hubbard Blue Organic
-0
Organic
Squash Seeds - Winter - Hubbard Blue - Organic
Starting at $3.89
Nasturtium Seeds - Jewel Mix (Organic)Nasturtium Seeds - Jewel Mix (Organic)
-17%
Heirloom
Organic
Nasturtium Seeds - Jewel Mix (Organic)
Starting at $11.39
Squash Seeds - Summer - Golden Zucchini (Organic)small size packet type seed packaging for - Squash Summer Golden Zucchini Organic
-0
Heirloom
Organic
Squash Seeds - Summer - Golden Zucchini (Organic)
Starting at $3.59
Bean Seeds - Bush - Phenomenal (Cowpeas)mid size pouch type seed packaging for - Zinnia Magellan Series Orange
-0
Bean Seeds - Bush - Phenomenal (Cowpeas)
Starting at $3.62
Squash Seeds - Winter - Amish Piesmall size packet type seed packaging for - Squash Winter Amish Pie
-0
Heirloom
Squash Seeds - Winter - Amish Pie
Starting at $3.09
Watermelon Seeds -  Picnic - Crimson Sweet Yellow (Organic)mid size pouch type seed packaging for - Watermelon Picnic Crimson Sweet Yellow Organic
-0
Heirloom
Organic
Watermelon Seeds - Picnic - Crimson Sweet Yellow (Organic)
Starting at $3.79
Melon Seeds - Valencia EarlyMelon Seeds - Valencia Early
-20%
Heirloom
Melon Seeds - Valencia Early
Starting at $1.99
Squash Seeds - Winter - Cushaw Orangesmall size packet type seed packaging for - Squash Winter Cushaw Orange
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Heirloom
Squash Seeds - Winter - Cushaw Orange
Starting at $3.39
Melon Seeds - Cantaloupe - Hales Best 45 PMRsmall size packet type seed packaging for - Melon Cantaloupe Hales Best 45 PMR
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Heirloom
Melon Seeds - Cantaloupe - Hales Best 45 PMR
Starting at $2.99
Watermelon Seeds - Picnic - Shiny Boy Hybrid (treated)
-0
AAS Winner
Watermelon Seeds - Picnic - Shiny Boy Hybrid (treated)
Starting at $4.09
Squash Seeds - Vermicelli F1small size packet type seed packaging for - Squash Vermicelli F1
-0
Squash Seeds - Vermicelli F1
Starting at $3.99
Corn Seeds - Dent - Boone County Whitesmall size packet type seed packaging for - Corn Dent Boone County White
-0
Heirloom
Corn Seeds - Dent - Boone County White
Starting at $2.63
Corn Seeds - Popcorn - Rainbow Jewel
-0
Corn Seeds - Popcorn - Rainbow Jewel
Starting at $3.99
Bean Seeds - Bush - Kentucky Wonder
-0
Heirloom
Bean Seeds - Bush - Kentucky Wonder
Starting at $2.63
Bean Seeds - Pole - Dark Green Yard Longmid size pouch type seed packaging for - Bean Pole Dark Green Yard Long
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Heirloom
Bean Seeds - Pole - Dark Green Yard Long
Starting at $3.99
Bean Seeds - Bush - Provider (Treated)small size packet type seed packaging for - Bean Bush Provider Treated
-0
Heirloom
Bean Seeds - Bush - Provider (Treated)
Starting at $11.06
Watermelon Seeds - Icebox - Hime Kansen Hybrid
Starting at $3.99
Corn Seeds - Dent - Ornamental - Bloody Butcher
Starting at $3.29
Squash Seeds - Winter - Cushaw Orange Stripe (Organic)
Starting at $3.89
Squash Seeds - Winter - Long Island Cheese
Starting at $3.79
Bean Seeds - Pole - Kurosanjaku Yard Long
Starting at $3.99
Squash Seeds - Winter - Lakota (Organic)
Starting at $4.79
Squash Seeds - Table King Bush Acorn (Organic)
Starting at $3.59
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