May is the month when the gardening season shifts into high gear across most of the country. In cold-winter zones, the last frost is finally behind us, and it's time to get warm-season crops in the ground. In mild-winter zones, the garden is already humming, and the focus turns to keeping up with rapid spring growth. And in the warmest zones, the race is on to get heat-lovers established before summer temperatures take over. Whatever your zone, May is a month of momentum.
Zones 1-7a: May is the main planting kickoff in cold-winter zones, when gardens finally move from starts and prep into full outdoor action. Early May often still favors hardy transplants and direct-sown cool-season crops, while mid-to-late May is when many areas can safely set out warm-season plants as frost risk drops. Keep hardening off seedlings, use row cover if nights run cold, and focus on steady watering and early weed control so young plants establish quickly.
Zones 7b-9a: May is prime warm-season planting time in mild-winter zones, with soil temperatures rising and growth accelerating. This is the month to get main-season crops established outdoors, keep up with succession sowing, and set up supports before vines and tall plants take off. Watch moisture as days warm, mulch to hold soil moisture, and keep an eye out for the first big flush of pests as the garden hits its stride.
Zones 9b-12: May marks the shift into early summer conditions in the warm-winter zones, and gardens respond fast with rapid growth. Warm-season crops should be planted and growing strongly now, and succession sowing keeps harvests coming even as temperatures climb. Stay ahead of heat stress by mulching, watering consistently, and planting in the coolest part of the day - and in the hottest areas, begin planning for shade cloth and other summer protection.
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![Legend: H for Heirloom, O for Organic, A for AAS Winner, F for staff favorites]()
Squash Seeds - Winter - Pink Banana Jumbo (Organic)
Organic Pink Banana Winter Squash is excellent for storing and is ready in 115 days. Recommended by OSU, Mexican Banana Squash produces pink-orange skin with sweet yellow-orange, fine-grained flesh. Plymouth...
Squash Seeds - Tatume
Tatume is a summer squash popular in Mexico and Texas, round/oval med-dark green to yellow fruits with faint stripes. Squash are best at 5-7" in diameter. Firm, fine flavor with...
Squash Seeds - Winter - Bush Delicata (Organic)
80 to 100 days to maturity. Cucurbita pepo. Organic Bush Delicata Winter Squash Seeds. Non-GMO, annual, heirloom, open-pollinated, AAS 2002. This is suitable for growing in fields, garden plots, raised...
Squash Seeds - Winter - Hubbard Blue - Organic
Organic Hubbard Blue Winter Squash Seeds. 100 - 120 days to maturity. Cucurbita maxima. Heirloom, Non-GMO, Annual. Fruits are slightly ridged and Blue-gray-green with a hard coarsely-warted shell. Hubbard Blue...
Squash Seeds - Winter - Cushaw Orange
95-105 days. Cushaw Orange Winter Squash Seeds. Cucurbita argyrosperma. Annual. Non-GMO. Popularly known throughout the world as "Japanese pie pumpkin" and "cushaw pumpkin", the cushaw squash seed is native to...
Squash Seeds - Vermicelli F1
cucurbita pepo (90 days) Despite it's resemblance to the Italian pasta, Spaghetti squash originally originated in Japan. This squash gets its name from the pasta-like strands that come out of...
Squash Seeds - Winter - Hopi Orange (Organic)
80-120 Days to maturity. Cucurbita maxima. Hopi Orange (Organic) Squash Seeds. Non-GMO, annual, organic, open-pollinated, heirloom. Suitable for growing in fields, containers, garden plots, raised beds, and greenhouses. Resistant to...
Squash Seeds - Winter - Delica - Hybrid
Squash Seeds - Winter - Delica - Hybrid. Non-GMO. Cucurbita maxima. 95-105 days (45-50 days after flowering). Warm season annual. Adaptable to many growing and soil conditions, this plant consistently...
Squash Seeds - Winter - Autumn Acorn Blend
Autumn Acorn Blend Winter Squash Seeds. 45 days to maturity. Cucurbita pepo. Heirloom, Annual. This is a component blend of Table Princess Table Gold White Ace and Mardi Gras. ~...
Squash Seeds - Winter - Hubbard Baby Blue
Hubbard Baby Blue Winter Squash Seeds. 90 to 100 Days. Non-GMO, Open Pollinated, Heirloom. Winter Squash. Cucurbita maxima. Dating back to the 1950s, the Hubbard Baby Blue was developed by...
Squash - Winter - Hubbard Baby Green
Hubbard Baby Green Winter Squash Seeds. 90 to 100 Days. Heirloom, Open Pollinated. Non-GMO. Winter Squash type. Cucurbita maxima. The Baby Green Hubbard is a scaled down version of the...
Squash Seeds - Winter - Hubbard Chicago Warted
Hubbard Chicago Warted Winter Squash Seeds. 110 Days to Harvest. Non-GMO Heirloom, Open Pollinated, Annual Seeds. Cucurbita maxima. AKA Green Warted Hubbard Squash. Hubbard Chicago Winter Squash is a very...
Squash Seeds - Winter - Kurinishiki - Hybrid
Squash Seeds - Winter - Kurinishiki - Hybrid. Non-GMO. Cucurbita maxima. 95-105 days (45-50 days after flowering). Warm season annual. This winter squash hybrid produces uniform dark green fruit with...
Squash Seeds - Winter - Delicata - Organic
(100 days) Introduced in 1890s. Delicious, creamy sweet potato like taste. Delicata has a fine grained, light orange flesh steamed or baked. Organic Delicata Squash Seeds Delicata has a very...
Squash Seeds, Winter - Calabaza de Castilla
100 to 110 Days to full maturity. Cucurbita moschata Calabaza de Castilla Winter Squash Seeds. Annual, Non-GMO, Heirloom. This winter squash pumpkin variety has a rustic light brown color, with...
Squash Seeds - Winter - Hubbard Golden Delicious
Hubbard Golden Winter Squash Seeds. Annual. 100-120 Days to Harvest. Heirloom, Non-GMO, Open Pollinated. Cucurbita maxima. Other names: Red Hubbard, Golden Warted Hubbard. Developed by M. D. Ferry in 1898,...
Squash Seeds - Winter - Lungo de Napoli
Lungo de Napoli Winter Squash Seeds. 100 days to maturity. Cucurbita moschata. Annual. Heirloom. Large oblong-butternut shaped fruit can weigh 20-35 lb The flesh is bright orange flavor is superb...
Squash Seeds - Table Gold
Cucurbita pepo (90 days) Created by Dr. Oved Shifriss, this highly productive, golden acorn-shaped squash has a fantastic nutty flavor. Squash Seeds - Table Gold Table Gold is earlier than...
Squash Seeds - Winter - Sweet Keeper
110 Days to maturity. Cucurbita maxima. Sweet Keeper Winter Squash Seeds. Non-GMO, annual, open-pollinated, heirloom. Suitable for growing in fields, containers, garden plots, raised beds, and greenhouses. Resistant to common...
Squash Seeds - Winter - Thelma Sanders
90 days to maturity. Cucurbita pepo. Thelma Sanders Acorn Winter Squash Seeds. Non-GMO, annual, heirloom, open-pollinated. Suitable for growing in fields, garden plots, and raised beds. Beloved Missouri heirloom acorn...
Squash Seeds - Japanese, Winter - Kogiku
Squash Seeds - Japanese, Winter - Kogiku. Heirloom, Non-GMO. Cucurbita maxima. 95 to 110 Days. 30 days after fruit setting. Warm season annual. An early maturing and disease resistant high...
Squash Seeds - Winter - Sunshine Hybrid
Hybrid Sunshine Winter Squash is a kabocha squash that out-shines other varieties in side-by-side trials across North America. Sunshine is ready in 95 to 100 days. Hybrid Sunshine Squash has...
Squash Seeds - Winter - Long Island Cheese
Long Island Cheese Squash Seeds. 90 to 100 Days. Open Pollinated, Hierloom, Non-GMO, Winter Squash. Cucurbita moschata. AKA: Long Island Cheese Pumpkin. Download Free Vegetable Growing Guide PDF Squash Seeds...
Squash Seeds - Winter - Lakota (Organic)
80-120 Days to maturity. Cucurbita maxima . Organic Lakota Squash Seeds. Non-GMO, annual, open-pollinated, heirloom. Suitable for growing in fields, containers, garden plots, raised beds, and greenhouses. Resistant to powdery...
Squash Seeds - Table King Bush Acorn (Organic)
80 days to maturity. Cucurbita pepo. Organic Table King Bush Acorn Winter Squash Seeds. Non-GMO, annual, heirloom, open-pollinated, AAS winner 1974. Suitable for growing in fields, garden plots, raised beds,...
Squash Seeds - Winter - Winter Harvest Blend
Winter Harvest Blend Winter Squash Seeds. 90 to 120 days to maturity. Cucurbita maxima. Heirloom, Annual. With gardens and farmland shrinking it makes sense to grow all your favorite winter...
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