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.

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Carrot Seeds - Scarlet Nantesmid size pouch type seed packaging for - Carrot Scarlet Nantes
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Heirloom
Carrot Seeds - Scarlet Nantes
Starting at $2.99
Squash Seeds - Japanese, Winter - Hokkori - Hybridmid size pouch type seed packaging for - Squash Japanese Winter Hokkori Hybrid
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Squash Seeds - Japanese, Winter - Hokkori - Hybrid
Starting at $3.99
Parsley Seeds - Hamburg Rootedsmall size packet type seed packaging for - Parsley Hamburg Rooted
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Heirloom
Parsley Seeds - Hamburg Rooted
Starting at $2.99
Squash Seeds - Winter - Amish Piesmall size packet type seed packaging for - Squash Winter Amish Pie
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Heirloom
Squash Seeds - Winter - Amish Pie
Starting at $3.09
Corn Seeds - Sweet - Abundance Hybrid
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Corn Seeds - Sweet - Abundance Hybrid
Starting at $5.17
Bean Seeds - Pole - Great Northern Cannellini (Organic)mid size pouch type seed packaging for - Bean Pole Great Northern Cannellini Organic
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Heirloom
Organic
Bean Seeds - Pole - Great Northern Cannellini (Organic)
Starting at $3.59
Watermelon Seeds - Tom Watson
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Heirloom
Watermelon Seeds - Tom Watson
Starting at $2.99
Parsley Seeds - Garden Blendsmall size packet type seed packaging for - Parsley Garden Blend
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Heirloom
Parsley Seeds - Garden Blend
Starting at $2.99
Squash Seeds - Winter - Burgess Buttercup Bush (Organic)
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Squash Seeds - Winter - Burgess Buttercup Bush (Organic)
Starting at $3.79
Sunflower Seeds - Mammoth Grey Stripe (Organic)
Starting at $3.59
Bean Seeds - Karikachi #3 Soybean - Clearance Seeds
Starting at $20.00
Squash Seeds - Winter - Butter Belle F1 Hybrid -...
Starting at $20.00
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