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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Radish Seeds - Golden Helios
Golden Helios Radish Seeds. 26 days to maturity. Raphanus sativus. Heirloom, Annual. Radish Helios was named after the Greek god of the sun. This olive-shaped radish is bright yellow with...
Squash Seeds - Summer - Zucchini Greyzinni Hybrid
50 days. High-yielding, 5 to 6 inch, attractive heavily striped, light green-grey zucchini with fine eating quality and creamy, sweet flavor. These somewhat blocky fruits have a slight taper. Open-spaced...
Sunflower Seeds - ProCut®
50-65 Days to maturity. Helianthus annuus. ProCut F1 Hybrid Sunflower Seeds: Non-GMO. Ornamental. Annual. ProCut sunflower series seeds grow some of summer's most astonishing, vigorous, and timeless blooms. ProCut sunflower...
Melon Seeds - Japanese - Ichiba Kouji Hybrid
55-60 Days to maturity. Cucumis melo. Ichiba Kouji Japanese Hybrid Melon Seeds. A non-GMO, annual, hybrid, heat tolerant, drought tolerant, Asian Melon. Suitable for growing in garden plots, raised beds,...
Squash Seeds - Winter - Delicata Bush AAS
Delicata Bush AAS Winter Squash Seeds. 80 - 100 days to maturity. 2002 National AAS Winner. Can be grown in containers. Cucurbita pepo. Annual. Heirloom. Healthy semi-bush 3-4 ft. vines,...
Beet Seeds - Crosby Egyptian - Organic
Beta vulgaris. (60 days) Egyptian type beets were created in the 1860s by the Germans. The Crosby strain was selected by Josiah Crosby of Arlington, Massachusetts and introduced by The...
Sunflower Seeds - Lemon Queen
80-100 Days to maturity. Helianthus annus. Lemon Queen Sunflower Seeds. Non-GMO, open-pollinated, heirloom, annual, multi-branching sunflower. This bright sunflower features light, lemony petals and a light brown center that demands...
Swiss Chard Seeds - Orange
55 days. Orange Swiss Chard is a great ornamental vegetable. Don't just plant it in the garden, add some in the landscaping. These bright orange stalks will spice up any...
Radish Seeds - Chinese - Starburst - Hybrid
60 Days to maturity. Raphanus sativus. Starburst Chinese Radish Hybrid Seeds. Cool Season Annual. Starburst radishes are part of the watermelon radish group, which means that you’ll find bright red...
Swiss Chard Seeds - Magenta Sunset
60 days. Magenta Sunset Swiss chard has striking almost neon pink stems with dark green leaves. These leaves are both beautiful and practical to grow in the home garden. Their...
Melon Seeds - Cantaloupe - Athena Hybrid
75 Days to maturity. Cucumis melo. Athena Hybrid Cantaloupe Melon Seeds. A non-GMO, annual, hybrid, heat-tolerant Cantaloupe Melon. Suitable for growing in garden plots, raised beds, and greenhouses. Resistant to...
Beet Seeds - Green Top Bunching
Beta vulgaris (60 days) Green Top Bunching beets have flattened globe shaped roots. Beet roots are red and tasty. Perfect for cooking or pickling. Approx. 1,500 seeds/ounce. Beet Seeds -...
Beet Seeds - Crosby Egyptian
Beta vulgaris (60 days) Egyptian type beets were created in the 1860s by the Germans. The Crosby strain was selected by Josiah Crosby of Arlington, Massachusetts and introduced by The...
Carrot Seeds - Brilliance
The Brilliance Carrot typically grows to 8-10 inches long in root length, with another 10-12 inches top length. Plant the seeds directly outside in full sun. Best grown when planted...
Corn Seeds - Dent - Pencil Cob
Zea mays Pencil Cob (73-100 days) is was named this way because the cob can be as thin as a pencil. This produces long and deep kernels. 73-100 Days to...
Swiss Chard Seeds - Rhubarb
55 days. Rhubarb Swiss Chard leaves are a beautiful variety and excellent in the kitchen as well. Recommended by USU. This plant produces dark reddish-green, heavily crumpled leaves, beautiful crimson...
Squash Seeds - Winter - Cushaw Green Striped
Cushaw Green Striped Squash Seeds. 95 to 105 Days. Winter Squash. Heirloom, Open Pollianted, Non-GMO. Cucurbita argyrosperma. AKA: Green Striped Cushaw Pumpkin, Sweet Potato Pumpkin, Improved Cushaw, Striped Crookneck. A...
Sorghum Seeds - Multicolored Broomcorn
105-119 days to maturity. Sorghum bicolor. Multicolored Broomcorn Seeds. Non-GMO, annual, open-pollinated, ornamental grain. This crop is suitable for growing in fields, garden plots, and raised beds. Multicolored broomcorn (sometimes...
Melon Seeds - Piel de Sapo
90-110 Days to maturity. Cucumis melo. Piel de Sapo Melon Seeds. A non-GMO, annual, open-pollinated, heirloom, heat tolerant, drought tolerant specialty Melon. Suitable for growing in garden plots and raised...
Watermelon Seeds - Picnic - Kleckley's Sweet
85 Days to maturity. Citrullus lanatus. Kleckley’s Sweet Watermelon Seeds. Non-GMO, annual, open-pollinated, heirloom, heat tolerant, seeded, picnic watermelon. Suitable for growing in garden plots. Kleckley's Sweet was also called...
Watermelon Seeds - Icebox - Yellow Petite
65-78 Days to maturity. Citrullus lanatus Yellow Petite watermelon seeds. Non-GMO, annual, open-pollinated, heirloom, heat tolerant, seeded, mini watermelon. Petite Yellow watermelon is perfect for those with a short growing...
Squash Seeds - Winter - Queensland Blue
95 days. Non-GMO. Heirloom. Queensland Blue Winter Squash Seeds from True Leaf Market to enjoy the sweet flavor of squash in soups, pies, and more. This heirloom winter squash from...
Squash Seeds - Lakota
80-120 Days to maturity. Cucurbita maxima . Lakota Squash Seeds. Non-GMO, annual, open-pollinated, heirloom. Suitable for growing in fields, containers, garden plots, raised beds, and greenhouses. Lakota winter squash is...
Squash Seeds - Summer - Fordhook Zucchini (Organic)
50 to 60 days to maturity. Cucurbita pepo. Organic Fordhook Zucchini Summer Squash Seeds. Non-GMO, annual, heirloom, open-pollinated, organic. This is suitable for fields, garden plots, raised beds, and containers....
Radish Seeds - Shirahime Hatsuka Daikon
22 to 30 Days to maturity. Raphanus sativus. Shirashime Hatsuka Daikon Radish Heirloom Seeds. Cool Season Annual. A uniquely small daikon radish, Shirashime Hatsuka is hardy, quick to harvest, and...
Watermelon Seeds - Icebox - Yellow Gem Sweet
80 days to maturity. Citrullus lanatus. Yellow Gem Sweet Watermelon Seeds. Non-GMO, annual, open-pollinated, heat tolerant, seeded, icebox watermelon. Now a true yellow Crimson Sweet watermelon. ~ 400 seeds per...
Carrot Seeds - Scarlet Red
65 Days to maturity. Daucus carota subsp. sativus. Scarlet Red Carrot Seeds. Annual, Non-GMO, Open Pollinated. This deep red carrot grows 6-8" long and has strong green tops. The red...
Bean Seeds - Bush - Golden Wax (Organic)
50-55 Days to maturity. Phaseolus vulgaris. Organic Golden Wax Bush Bean Seeds. Non-GMO, annual, organic, open-pollinated, heirloom, high-yielding, bush, snap wax bean. Suitable for growing in containers, garden plots, raised...
Bean Seeds - Pole - Purple Mart Tsu In Yard...
75-80 Days to maturity. Vigna unguiculata subsp. sesquipedalis. Purple Mart Tsu In Yard Long Bean Seeds. Non-GMO, annual, open-pollinated, heirloom, heat-tolerant, pole, snap, Asian, specialty bean. Suitable for growing in...
Swiss Chard Seeds - Yellow
55 days. The Yellow Swiss Chard is a variety that produces dark green leaves on bright Yellow stems. These stems are excellent as an ornamental piece in the garden, but...
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