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]()
Alfalfa - Organic - Cover Crop Seeds
60-70 Days. Medicago sativa. Organic. Non-GMO. Cover Crop. Also known as "lucerne", Organic non-GMO alfalfa is a year-round cover crop, widely grown for its nitrogen-replenishing benefits and fertile, all-natural springtime...
Squash Seeds - Summer - Zucchini, Endurance BC, F1
Summer Squash, Endurance BC-2 F1. Cucurbita pepo. AKA: Zucchini. Squashes started showing up in Italian kitchens as early as 1600, the "Zucchini" variety probably originated around 1850. Extremely productive, and...
Squash Seeds - Summer - Zucchini Golden
55-65 days. Golden Zucchini Summer Squash Seeds. Cucurbita pepo. Annual. Open Pollinated. Non-GMO Heirloom Golden Zucchini is the summer squash to grow in the garden. it's ready in 55 days...
Squash Seeds - Summer - Golden Glory Hybrid
53 days. The 7 to 8 inch, 2-3" in diameter, smooth, waxy-skinned, gold fruits have creamy white, excellent tasting flesh. The vigorous open plant bears fruit of superior quality and...
Swiss Chard Seeds - Lucullus
50 days. The Lucullus Swiss Chard seed variety produces large green leaves and white stems. This variety is one of the best for gardeners looking for a swiss chard that...
Carrot Seeds - Purple
65-70 days. Purple carrot Seeds. Daucus carota subsp. sativus. Non-GMO. Heirloom. The Purple Carrot is unique in that it appears quite differently when it is sliced than when it is...
Radish Seeds - Purple Plum
Non-GMO, Heirloom Purple Plum Radish Seeds. 25-30 days. Bright purple skin, firm white flesh, crisp, sweet and mild all season, never pithy of hot, hardy and adaptable. Download Free Vegetable...
Beet Seeds - Sugar Beet
Beta vulgaris (90 days) Sugar beets are a natural source of sugar and where most of the sugar industry derives its sugar from these days. Beets are up to 1...
Broccoli Seeds - Green Sprouting Calabrese
brassica oleracea var. capitata (60-90 days) Start Green Sprouting broccoli early in the season and by early summer you will have tons of sweet broccoli. Harvest the central head then...
Squash Seeds - Summer - Cocozelle Zucchini
50-60 Days to maturity. Cucurbita pepo. Cocozelle Zucchini Seeds. Non-GMO, annual, open-pollinated, heirloom. Suitable for growing in garden plots, raised beds, and containers. A traditional Italian heirloom introduced in the...
Beet Seeds - Chioggia
55 Days. Beta vulgaris. Annual. Open-pollinated. Pronounced "key-oh-jah" after the small Venetian villa town, non-GMO Chioggia beet seeds are a classic Italian garden heirloom grown and sold throughout the Mediterranean...
Bean Seeds - Bush - Top Notch Golden Wax
53 Days to maturity. Phaseolus vulgaris. Top Notch Golden Wax Bush Bean Seeds. Non-GMO, annual, organic, hybrid, open-pollinated, heirloom, AAS winner, high yielding, deer resistant, heat tolerant, drought tolerant, bush/pole,...
Bean Seeds - Bush - Henderson Lima
65-85 Days to maturity. Phaseolus lunatus. Henderson Lima Bean Seeds. Non-GMO, annual, open-pollinated, heirloom, high-yielding, heat-tolerant, drought-tolerant, bush, shell, lima bean. Suitable for growing in containers, garden plots, raised beds,...
Zucchini Seeds - Cocozelle - Organic
(48 days) Introduced prior to 1885. An Italian heirloom still widely grown today. Bush type squash with long cylindrical, dark green, zucchini. Organic Cocozelle Zucchini Squash Seeds Cocozelle has very...
Swiss Chard Seeds - Bright Lights
55 days. AAS Winner for 1998. A vibrant new Swiss Chard. Distinguished by stems of many different colors - gold, pink, orange, purple, red, and white. This variety is a...
Melon Seeds - Cantaloupe - Imperial 45
65-85 Days to maturity. Cucumis melo. Imperial 45 Cantaloupe Melon Seeds. A non-GMO, annual, open-pollinated, heirloom, AAS winner, heat-tolerant Cantaloupe Melon. Suitable for growing in garden plots, raised beds, and...
Squash Seeds - Winter - Sweet Meat
Non-GMO Sweet Meat Winter Squash is ready in 100 days. USU recommends this variety of winter squash due to the fact it's vigorous, heavy-yielding vines. Fruit on Gill's Sweet Meat...
Radish Seeds - Watermelon
60-65 days. Watermelon Radish Seeds. Raphanus sativus. Non-GMO. Heirloom. AKA: "Roseheart Radish" or "Red Meat Radish". Watermelon Radish seeds are native to China and a cousin to Daikon radish. Watermelon...
Bean Seeds - Bush - Provider
50-65 Days to maturity. Phaseolus vulgaris. Provider Bush Bean Seeds. Non-GMO, annual, open-pollinated, heirloom, high-yielding, heat-tolerant, bush, snap, green bean. Suitable for growing in containers, garden plots, raised beds, and...
Bean Seeds - Bush - Roma II
50-65 Days to maturity. Phaseolus vulgaris. Roma II Bush Bean Seeds. Non-GMO, annual, open-pollinated, heirloom, AAS winner, high-yielding, heat-tolerant, bush, snap, romano, green bean. Suitable for growing in containers, garden...
Swiss Chard Seeds - Ruby Red
55 days. This plant produces good yields of dark green shiny leaves with ruby red stalks and veins. Both the stems and the leaves xcellent for salads and steamed with...
Melon Seeds - Cantaloupe - Hearts of Gold
80-90 Days to maturity. Cucumis melo. Hearts of Gold Cantaloupe Melon Seeds. A non-GMO, annual, open-pollinated, heirloom, heat-tolerant Cantaloupe Melon. Suitable for growing in garden plots, raised beds, and greenhouses....
Bean Seeds - Bush - Blue Lake (Organic)
50-65 Days to maturity. Phaseolus vulgaris. Organic Blue Lake Bush Bean Seeds. Non-GMO, annual, open-pollinated, heirloom snap bush bean. Suitable for growing in containers, garden plots, raised beds, and greenhouses....
Corn Seeds - Flour - Painted Mountain (Organic)
90 Days to maturity. Zea mays. Painted Mountain Organic Corn Seeds. Non-GMO, warm season annual, certified organic, open-pollinated, heirloom, Flour Corn. Suitable for growing in garden plots or raised beds....
Bean Seeds - Pole - Scarlet Runner
50-75 Days to maturity. Phaseolus coccineus. Scarlet Runner Bean Seeds. Non-GMO, annual, open-pollinated, heirloom, high-yielding, AAS Winner, drought tolerant, high-yielding, pole, snap string bean. Suitable for growing in containers, garden...
Beet Seeds - Golden - Organic
(58 days) aka Golden Detroit Golden beet made its debut in 1970. If you are annoyed with those pesky red beets "bleeding" all over your counters, then this is the...
Corn Seeds - Sweet - Silver Queen Hybrid
88 Days to maturity. Zea mays. Silver Queen Hybrid Sweet Corn Seeds. Non-GMO, annual, hybrid, Sweet Corn. Suitable for growing in garden plots or raised beds. Corn tolerates heat and...
Sunflower Seeds - Autumn Beauty Mix
90-100 Days to maturity. Helianthus annuus. Autumn Beauty Mix Sunflower Seeds: Non-GMO. Open Pollinated. Ornamental. Annual. Heirloom. Autumn Beauty Mix seeds grow one of the summer's most explosive and familiar...
Dill Seeds - Dwarf Fernleaf
Non-GMO, Heirloom Dwarf Fernleaf Dill Herb Garden Seed from True Leaf Market. Anethum graveolens. Dwarf Fernleaf Dill grows as slow-bolting warm-season annuals and is native to South Russia and regions...
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