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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Melon Seeds - Pickling - Green Stripedmid size pouch type seed packaging for - Melon Pickling Green Striped
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Melon Seeds - Pickling - Green Striped
Starting at $3.99
Melon Seeds - Crenshaw - Marvelous Hybridmid size pouch type seed packaging for - Melon Crenshaw Marvelous Hybrid
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Melon Seeds - Crenshaw - Marvelous Hybrid
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Radish Seeds - Iwai Daikonmid size pouch type seed packaging for - Radish Iwai Daikon
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Radish Seeds - Iwai Daikon
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Melon Seeds - Crenshaw - White Crenshawsmall size packet type seed packaging for - Melon Crenshaw White Crenshaw
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Melon Seeds - Crenshaw - White Crenshaw
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Radish Seeds - Nerimamid size pouch type seed packaging for - Radish Nerima
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Radish Seeds - Nerima
Starting at $3.99
Bean Seeds - Pole - Shirohana Fujimame Hyacinthmid size pouch type seed packaging for - Bean Pole Shirohana Fujimame Hyacinth
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Bean Seeds - Pole - Shirohana Fujimame Hyacinth
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Leaf Radish Seeds - Saisai Purple - Hybridmid size pouch type seed packaging for - Leaf Radish Saisai Purple Hybrid
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Leaf Radish Seeds - Saisai Purple - Hybrid
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Radish Seeds - Red Rat's Tail
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Radish Seeds - Red Rat's Tail
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Squash Seeds - Japanese, Winter - Shishigatani
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Bean Seeds - Pole - Akahana Mame
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Melon Seeds - Oshiro Uri Numane - Clearance Seeds
Starting at $10.00
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