June is a month of full-throttle gardening across most of the country. Cold-winter zones are finally free of frost and working hard to get warm-season crops in the ground — but June also brings the first quiet signal that fall is not far off, and a few crops need to go indoors now to be ready in time. Mild-winter zones are managing a garden already in high gear, balancing harvests, succession sowing, and the first real heat of the season. And in the warmest zones, the focus shifts decisively toward heat-tolerant crops and keeping the garden productive as temperatures peak. Wherever you garden, June rewards attentiveness.
Cold Winter Zones (3–7): June is the heart of the warm-season planting window. The frost risk is behind you, soils are warming, and this is your window to get tomatoes, peppers, cucumbers, squash, beans, and corn in the ground. At the same time, June is when fall planting quietly begins. Leeks, pansies, and violas all need to be started indoors this month if you want them for a fall harvest or bloom before the October freeze.
Mild Winter Zones (8–9a): By June, gardens in these zones are in full production. Most warm-season crops are in the ground and growing fast. The main jobs this month are watering consistently, mulching to hold moisture and cool the soil, and staying on top of pests. It is still worth succession sowing heat-tolerant crops early in the month, but as temperatures climb, the emphasis shifts from planting to tending and harvesting. Fall planting starts in July and August for these zones — no action needed yet, but a good month to plan.
Warm Winter Zones (9b–12): June marks the start of high summer, and gardening strategies shift accordingly. Heat-tolerant crops like okra, sweet potatoes, cowpeas, and yard-long beans thrive now, while most cool-season crops are long finished. In frost-free areas with reliable summer rainfall — particularly Florida and Hawaii — tropical crops come into their own. Fall planting is still months away, but worth thinking about: in these zones, fall is the prime growing season, and August and September are when the cool-season garden gets rolling again.
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![Legend: H for Heirloom, O for Organic, A for AAS Winner, F for staff favorites]()
Watermelon Seeds - Picnic - Tendersweet Orange
Citrullus lanatus (90 days) Yummalicious orange, crisp, sweet, watermelon that is not only colorful, but also intensely tasty. Watermelon Seeds - Tendersweet Orange This is the standard for orange fleshed...
Corn Seeds - Sweet - Honey Select Hybrid
80 Days to maturity. Zea mays. Honey Select Hybrid Corn Seeds. Non-GMO, annual, AAS winner, hybrid, Sweet Corn. Suitable for growing in garden plots or raised beds. Corn tolerates heat...
Squash Seeds - Winter - Blue Hubbard
Blue Hubbard Squash is a blue-gray-green slightly ridged and warted winter squash variety. it's best attributes is its long storage time (6 months!) and its perfectly sweet taste. Don't let...
Squash Seeds - Winter - Japanese Red Kuri (Uchiki Kuri)
95 days to maturity. Cucurbita maxima. Japanese Red Kuri (Uchiki Kuri) Winter Squash Seeds. Non-GMO, annual, heirloom, open-pollinated. Suitable for growing in fields, garden plots, raised beds, and containers. Teardrop-shaped...
Watermelon Seeds - Picnic - Moon & Stars (Organic)
95 Days to maturity. Citrullus lanatus. Organic Moon & Stars Watermelon Seeds. Non-GMO, annual, organic, open-pollinated, heirloom, heat tolerant, seeded, picnic watermelon. Suitable for growing in garden plots. These medium-sized...
Watermelon Seeds - Icebox - Bush Sugar Baby
75 Days to maturity. Citrullus lanatus. Bush Sugar Baby Watermelon Seeds. Non-GMO, annual, open-pollinated, heirloom, heat tolerant, seeded, Icebox watermelon. Suitable for growing in garden plots and large containers (minimum...
Sunflower Seeds - Italian White
90-110 Days to maturity. Helianthus debilis. Italian White Sunflower Seeds: Non-GMO. Open Pollinated. Ornamental. Annual. Heirloom. Italian White sunflower seeds grow some of summer's most elegant, classic, and vigorous blooms....
Corn Seeds - Sweet - Bodacious R/M Hybrid
80-90 Days to maturity. Zea mays. Bodacious R/M Hybrid Corn Seeds. Non-GMO, annual, hybrid, Sweet Corn. Suitable for growing in garden plots or raised beds. Corn tolerates heat and drought-prone...
Radish Seeds - Lady Slipper
Non-GMO Heirloom Lady Slipper Radish is ready in 28 days. Beautiful soft-pink radish has an elongated body and roots. This radish has a smooth appearance and a crisp, mild, sweet...
Corn Seeds - Sweet - Sugar Buns Hybrid
70-80 Days to maturity. Zea mays. Sugar Buns Hybrid (treated) Corn Seeds. Non-GMO, annual, hybrid, Sweet Corn. Suitable for growing in garden plots or raised beds. Corn tolerates heat and...
Carrot Seeds - Kuroda Long 8"
The Kuroda Long 8" carrot is a sweet Asian carrot. It is tolerable to multiple climates, and grows best with some shade. Seeds should be planted in fertile loose soil....
Squash - Summer - Dark Green Zucchini (Organic)
Cucurbita pepo. (45-65 days) An early vigorous bush zucchini with straight, smooth, dark-green mottled fruits. Tastiest at 6-8" with pale greenish-white, firm flesh. Great for market growers and easy to...
Radish Seeds - Easter Egg Blend
Non-GMO Easter Egg Blend Radish Seeds, Heirloom. Easter Egg Blend Radish Seeds are native to regions in Asia and were grown in Europe around 5,000 years ago. Freshly eaten radishes...
Radish Seeds - Korean - Cheong Du - Hybrid
60 to 65 days to maturity. Raphanus sativus. Cheong Du Korean Radish Seeds. Hybrid, cool season annual. Cheong Du radishes are a common, popular variety in Korea. Their name means...
Corn Seeds - Popcorn - Glass Gem
110 days. The Glass Gem variety of corn was developed by Carl Barnes, a farmer from Oklahoma, as a way of reconnecting with his Cherokee heritage. The Glass Gem seeds...
Squash Seeds - Summer - Sunburst Hybrid
Non-GMO Hybrid Sunburst Squash is a buttery-yellow scallop summer squash. Best picked when it grows 2-3 inches wide. Pattypan squash variety with a thin skin with a bush habit that...
Squash Seeds - Winter - Sweet Dumpling
The sweet and tender flesh of the Sweet Dumpling squash is a fall favorite for many. Planted in the spring for a fall harvest, non-GMO, heirloom Sweet Dumpling squash seeds...
Corn Seeds - Sweet - Country Gentleman
90 Days to maturity. Zea mays. Country Gentlemen Corn Seeds. Non-GMO, annual, open-pollinated, Sweet Corn. Suitable for growing in garden plots or raised beds. Corn tolerates heat and drought-prone regions....
Squash Seeds - Summer - Zucchini Elite Hybrid
46 days. A new virus tolerant strain which produces high yields of attractive, truly green, slightly tapered fruit with few freckles of yellow. Open areas promote ease in harvesting. Continues...
Squash Seeds - Summer - Fordhook Zucchini
50-60 Days to maturity. Cucurbita pepo. Fordhook Summer Zucchini Seeds. Non-GMO, annual, open-pollinated, heirloom. 1942 AAS winner. Suitable for growing in fields, garden plots, raised beds, and greenhouses. Resistant to...
Watermelon Seeds - Mini - Golden Midget
60-70 Days to maturity. Citrullus lanatus. Golden Midget Watermelon Seeds. Non-GMO, annual, organic, open-pollinated, heirloom, heat tolerant, seeded, mini watermelon. Bred by Elwyn Meader and Albert Yaeger at U of...
Corn Seeds - Dent - Hickory King White
115 Days to maturity. Zea mays. Hickory King White Corn Seeds. Non-GMO, annual, open-pollinated, heirloom, Dent Corn. Suitable for growing in garden plots or raised beds. Corn tolerates heat and...
Bean Seeds - Bush - Gold Rush Wax
50-65 Days to maturity. Phaseolus vulgaris.Wax Gold Rush Bush Bean Seeds. Non-GMO, annual, open-pollinated, heirloom, AAS winner, bush, snap, wax bean. Suitable for growing in containers, garden plots, raised beds,...
Melon Seeds - Charentais
90 Days to maturity. Cucumis melo var. inodorus. Charentais Melon Seeds. A non-GMO, annual, open-pollinated, heirloom, heat-tolerant specialty melon. Suitable for growing in containers, garden plots, raised beds, and greenhouses....
Bean Seeds - Pole - Red Noodle Yard Long
50-75 Days to maturity. Vigna unguiculata subsp. sesquipedalis. Red Noodle Yard Long Bean Seeds. Non-GMO, annual, open-pollinated, heirloom, heat-tolerant, pole, snap, Asian, specialty bean. Suitable for growing in containers, garden...
Cucumber Seeds - Armenian Striped
50-75 Days to maturity. Cucumis melo. Armenian Striped Cucumber Seeds. Non-GMO, annual, open-pollinated, heirloom, monoecious, slicing cucumber. Suitable for growing in fields, containers (with support), garden plots, raised beds, and...
Bean Seeds - Bush - Provider (Organic)
50-65 Days to maturity. Phaseolus vulgaris. Organic Provider Bush Bean Seeds. Non-GMO, annual, organic, open-pollinated, heirloom, high yielding, heat tolerant, bush, snap, green bean. Suitable for growing in containers, garden...
Bean Seeds - Pole - Akasanjaku Yard Long
75 Days to maturity. Vigna unguiculata subsp. sesquipedalis. Akasanjaku Yard Long Bean Seeds. Non-GMO, annual, open-pollinated, heat-tolerant, heirloom, pole, snap, Asian, specialty bean. Suitable for growing in containers, garden plots,...
Watermelon Seeds - Picnic - Sangria Hybrid
87 Days to maturity. Citrullus lanatus. Sangria Hybrid Watermelon Seeds. Non-GMO, annual, hybrid, heat tolerant, seeded, picnic watermelon. Suitable for growing in garden plots. Resistant to Anthracnose (1), Fusarium Wilt...
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