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]()
Melon Seeds - Casaba - Sungold (Organic)
85-110 Days to maturity. Cucumis melo. Organic Sungold Casaba Melon Seeds. A non-GMO, annual, organic, open-pollinated, heirloom, heat-tolerant, drought-tolerant, Casaba Melon. Suitable for growing in garden plots, raised beds, and...
Melon Seeds - Cantaloupe - Iroquois
75-90 Days to maturity. Cucumis melo. Iroquois Cantaloupe Melon Seeds. A non-GMO, annual, open-pollinated, heirloom, heat-tolerant Cantaloupe Melon. Suitable for growing in garden plots, raised beds, and greenhouses. Resistant to...
Radish Seeds - Giant Luo Buo
Radish Seeds - Giant Luo Buo. Heirloom, Non-GMO. Raphanus sativus. 80-100 days. Cool season annual. This large oval white radish grows 8-10" long and 5-6" in diameter and is very...
Watermelon Seeds - Tom Watson
Tom Watson Watermelon Seeds. 90 Days. Non-GMO, heirloom, open pollinated seeds. Citrullus lanatus. AKA: Ole Tom Watson. A very old heirloom variety originating from the state of Georgia, dating back...
Watermelon Seeds - Picnic - Greybelle
80-90 Days to maturity. Citrullus lanatus. Greybelle Watermelon Seeds. Non-GMO, annual, open-pollinated, heirloom, heat tolerant, seeded, picnic watermelon. Suitable for growing in garden plots. 15-20 pound round fruits. Greybelle watermelon...
Melon Seeds - Sakata's Sweet
85-90 Days to maturity. Cucumis melo. Sakata's Sweet Melon Seeds. A non-GMO, annual, open-pollinated, heirloom, heat-tolerant Asian Melon. Suitable for growing in garden plots, raised beds, and greenhouses. Resistant to...
Melon Seeds - Cantaloupe - Iroquois (Organic)
75-90 Days to maturity. Cucumis melo. Iroquois Organic Cantaloupe Melon Seeds. A non-GMO, annual, organic, open-pollinated, heirloom, heat-tolerant Cantaloupe Melon. Suitable for growing in garden plots, raised beds, and greenhouses....
Watermelon Seeds - Picnic - Garrisonian
80-90 Days to maturity. Citrullus lanatus. Garrisonian Watermelon Seeds. Non-GMO, annual, open-pollinated, heirloom, heat tolerant, seeded, picnic watermelon. Garrisonian Watermelon Seeds from True Leaf Market produce large, oblong watermelon fruits...
Watermelon Seeds - Picnic - Striped Klondike R7
80-90 Days to maturity. Citrullus lanatus. Striped Klondike R7 Watermelon Seeds. Non-GMO, annual, open-pollinated, heirloom, heat tolerant, seeded, picnic watermelon. Suitable for growing in garden plots. Klondike R7 watermelon is...
Melon Seeds - Vine Peach
60-90 Days to maturity. Cucumis melo. Vine Peach Melon Seeds. A non-GMO, annual, open-pollinated, heirloom, heat-tolerant specialty Melon. Suitable for growing in containers, garden plots, raised beds, and greenhouses. Also...
Melon Seeds - Honeydew - Golden Honeymoon
92 Days to maturity. Cucumis melo. Golden Honeymoon Melon Seeds. A non-GMO, annual, open-pollinated, heirloom, heat-tolerant Honeydew Melon. Suitable for growing in garden plots, raised beds, and greenhouses. Resistant to...
Parsley Seeds - Garden Blend
70-99 Days to maturity. Petroselinum crispum. Garden Blend Parsley Seeds. Non-GMO, annual, open-pollinated, heirloom. Suitable for growing in fields, containers, garden plots, raised beds, and greenhouses. Garden Blend Parsley is...
Melon Seeds - Schoon's Hardshell (Organic)
88-95 Days to maturity. Cucumis melo. Schoon's Hardshell Organic Melon Seeds. A non-GMO, annual, organic, open-pollinated, heirloom, heat-tolerant specialty Melon. Suitable for growing in garden plots, raised beds, and greenhouses....
Melon Seeds - Cantaloupe - Imperial PMR 45 (Organic)
80-90 Days to maturity. Cucumis melo. Imperial PMR 45 Organic Cantaloupe Melon Seeds. A non-GMO, annual, organic, open-pollinated, heirloom, heat-tolerant Cantaloupe Melon. Suitable for growing in garden plots, raised beds,...
Melon Seeds - Eindor
80-90 Days to maturity. Cucumis melo var. reticulatus. Eindor Melon Seeds. A non-GMO, annual, open-pollinated, heirloom, heat-tolerant specialty Melon. Suitable for growing in containers, garden plots, raised beds, and greenhouses....
Radish Seeds - Sakurajima Mammoth
80 to 90 Days to maturity. Raphanus sativus. Sakurajima Mammoth Heirloom Seeds. Cool Season Annual. Known as the “Largest Radish in the World” in Japan, Sakurajima Mammoth radishes can grow...
Melon Seeds - Cantaloupe - Top Mark
80-90 Days to maturity. Cucumis melo var. cantalupensis. Top Mark Melon Vegetable Seeds. Non-GMO, annual, open-pollinated, heirloom, cantaloupe melon. Resistant to Downy Mildew, Powdery Mildew, Cucumber Beetles, is scab resistant,...
Sunflower Seeds - Lemon Queen (Organic)
80-100 Days to maturity. Helianthus annus. Organic Lemon Queen Sunflower Seeds. Non-GMO, organic, open-pollinated, heirloom, annual, multi-branching sunflower. This bright sunflower features light, lemony petals and a light brown center...
Melon Seeds - Glamorous Hybrid (Organic)
90 Days to maturity. Cucumis melo. Organic Glamorous Hybrid Melon Seeds. A non-GMO, annual, organic, F1 hybrid, heat-tolerant Galia Melon. Suitable for growing in garden plots, raised beds, and greenhouses....
Bean Seeds - Bush - Dark Red Kidney
90-100 Days to maturity. Phaseolus vulgaris. Dark Red Kidney Bean Seeds. Non-GMO, annual, open-pollinated, heirloom, high-yielding, bush, shelling bean. Suitable for growing in containers, garden plots, raised beds, and greenhouses....
Melon Seeds - Giallo Canary Rugoso
90-110 Days to maturity. Cucumis melo. Giallo Canary Rugoso Melon Seeds. A non-GMO, annual, open-pollinated, heat-tolerant melon. Suitable for growing in garden plots, raised beds, and greenhouses. This unique canary...
Corn Seeds - Ornamental - Wampum
Wampum Ornamental Corn Seeds. Zea mays. Heirloom, Annual. 90 days to maturity. Earlier version of a Carousel type ornamental with ears 4-5 in. long 1.25 in. diameter. Approximately 150 seeds/ounce....
Carrot Seeds - St. Valery
70-100 Days to maturity. Daucus carota var. sativus. St Valery Carrot Vegetable Seeds. Non-GMO, annual, open-pollinated, heirloom seeds. A very old, heirloom carrot strain that produces smooth, uniform orange-red roots...
Melon Seeds - Cantaloupe - Emerald Gem
70-90 Days to maturity. Cucumis melo var. cantalupensiso. Emerald Gem Cantaloupe Melon Seeds. A non-GMO, annual, open-pollinated, heirloom, heat-tolerant Cantaloupe Melon. Suitable for growing in garden plots, raised beds, and...
Melon Seeds - Glamorous Hybrid
90 Days to maturity. Cucumis melo. Glamorous Hybrid Melon Seeds. A non-GMO, annual, F1 hybrid, heat-tolerant Galia Melon. Suitable for growing in garden plots, raised beds, and greenhouses. The Glamorous...
Squash Seeds - Winter - Goldetti Hybrid (Organic)
100 Days to maturity. Cucurbita pepo. Organic Goldetti Hybrid Winter Squash Vegetable Seeds. Non-GMO, annual, organic, high-yielding F1 hybrid winter squash. These rounded, cylindrical golden fruits are 10-11 inches long...
Melon Seeds - Casaba - Sungold
85-110 Days to maturity. Cucumis melo. Sungold Casaba Melon Seeds. A non-GMO, annual, open-pollinated, heirloom, heat-tolerant, drought-tolerant, Casaba Melon. Suitable for growing in garden plots, raised beds, and greenhouses. This...
Watermelon Seeds - Picnic - Moon & Stars Yellow Flesh...
90-95 Days to maturity. Citrullus lanatus. Organic Moon & Stars Yellow Watermelon Seeds. Non-GMO, annual, organic, open-pollinated, heirloom, heat tolerant, seeded, picnic watermelon. Suitable for growing in garden plots. First...
Watermelon Seeds - Picnic - Summer Color Mix
Summer Color Mix Watermelon Seeds. 70 to 100 days to maturity. Citrullus lanatus. Open Pollinated. Annual. A mixture of red pink white yellow and orange fleshed seeded watermelons. Approximately 400...
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