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.
Indoors (fresh harvests):
-
Microgreens: peas, broccoli, sunflowers, arugula
-
Sprouts: alfalfa, broccoli, radish, mung
-
Herbs & greens under lights: chives, parsley, mint
Transplants to move outdoors (harden first): pepper, tomato, eggplant, melons, basil, okra — these should go out early May if not already in the ground
Crops that can be directly sown outdoors in May: beans, corn, cucumber, squash, melons, okra, sunflower, basil, dill, sweet potato slips. Succession sow beets, carrots, and radishes early in the month before heat sets in.
Cover crops: buckwheat, cowpeas, sorghum-sudangrass
Note: Warm-season crops should be going directly outdoors now, not starting under lights.
Tip: An Olympia, WA zone 8 is very different from a Jackson, MS zone 8. Consider checking with your state Extension Service office for more specific recommendations and guidelines.
Use your USDA zone as a guide. Microclimates matter — coastal/urban spots run warmer; high elevation runs colder.
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Chinese Cabbage Seeds - Mini Kisaku 50 - Hybrid
50-55 Days to maturity. Brassica rapa var Pekinensis 'Mini Kisaku 50'. Mini Kisaku 50 Hybrid Chinese Cabbage Seeds. Annual Hybrid. This unique Michihili-type cabbage is a mini hybrid that develops...
Onion Seeds - Short - Barletta
60-69 Days to maturity. Allium cepa. Barletta Onion Seeds. Non-GMO, annual, open-pollinated, heirloom, small, white, round-bulbing pearl type, short-day onion. Suitable for growing in greenhouses, garden plots, raised beds, and...
Corn Seeds - Dent - Eureka Ensilage
110-120 Days to maturity. Zea mays. Eureka Ensilage Corn Seeds. Non-GMO, annual, open-pollinated, heirloom, Dent Corn. Suitable for growing in garden plots or raised beds. Corn tolerates heat and drought-prone...
Cucumber Seeds - Zipangu - Hybrid
55-60 Days to maturity. Cucumis sativus var. zipangu. Zipangu Cucumber Hybrid Seeds. Warm Season Annual Hybrid. A delicious and versatile cucumber variety that deserves more attention than it gets! Zipangu...
Tomato Seeds - Cherry - Cherry Bicolor
70-79 Days to maturity (from transplant). Solanum lycoperscium. Cherry Bi-Color Tomato Seeds. Non-GMO, annual, open-pollinated, heirloom, indeterminate, cherry tomato. Suitable for growing in garden plots, raised beds, greenhouses. The German...
Pepper Seeds - Hot - NuMex Twilight
80-90 Days to maturity (from transplant). Capsicum annuum. Nu Mex Twilight Pepper Seeds. Non-GMO, annual, open-pollinated, heirloom, deer resistant, hot heat levels. 30,000 to 50,000 Scoville Heat Units. Suitable for...
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...
Eggplant Seeds - Round Mauve
Round Mauve eggplant are 3 inch in diameter. Fruits are mauve and round with white flesh. Plants grow 24-36 inches tall. Sow seeds indoors and transplant outdoors in full sun...
Bean - Fava (Organic) - Cover Crop Seeds
80-90 Days. Vicia faba. Organic. Cover Crop. Open-pollinated. Organic Fava bean seeds grow a vining annual variety cover crop able to be sown in almost any month for improved soil...
Corn Seeds - Popcorn - Strawberry
100 Days to maturity. Zea mays. Popcorn - Strawberry Corn Seeds. Non-GMO, annual, open-pollinated, heirloom, Pop Corn. Suitable for growing in garden plots or raised beds. Corn tolerates heat and...
Tomato Seeds - Slicing - Purple Calabash
80-90 Days to maturity (from transplant). Solanum lycopersicum. Purple Calabash Tomato Seeds. Non-GMO, warm season annual, open-pollinated, heirloom, drought tolerant, indeterminate, slicing tomato. Suitable for growing in garden plots, raised...
Endive Seeds - Broadleaf Batavian - Organic
Cichorium endivia. (80 days) Lettuce-like leaves are broad and slightly twisted. Leaves form around 10-12" heads that are tightly packed with a well blanched, creamy heart. Makes an excellent garnish...
Bean Seeds - Bush - Royal Burgundy (Treated)
50-65 Days to maturity. Phaseolus vulgaris. Treated Royal Burgundy Bush Bean Seeds. Non-GMO, annual, open-pollinated, heirloom, high-yielding, bush, snap bean. Suitable for growing in containers, garden plots, raised beds, and...
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...
Chinese Cabbage Seeds - Kogane
Chinese Cabbage Seeds - Kogane. Heirloom, Non-GMO. Brassica rapa var pekinensis. 5-7 days microgreens, 70-80 days to maturity. Cool season annual. Kogane means gold in Japanese. When mature, the loose...
Onion Seeds - Short - Superex Yellow Hybrid
160 Days to maturity. Allium cepa. Superex Yellow Onion Seeds. Non-GMO, annual, hybrid, bulbing, short-day onion. Suitable for growing in greenhouses, garden plots, and raised beds. Resistant to disorders. Alt...
Pepper Seeds - Sweet - Muscato Hybrid
70-79 Days to maturity (from transplant). Capsicum annuum. Muscato Hybrid Pepper Seeds. Non-GMO, annual, F1 hybrid, sweet pepper with no heat levels. 0 Scoville Heat Units. Suitable for growing in...
Mustard Seeds - Senposai Komatsuna Hybrid
30-40 to maturity. Brassica rapa var. perviridis. Senposai Komatsuna Mustard Seeds. Non-GMO, warm or cold-season, annual, hybrid. This popular traditional Japanese komatsuna hybrid has glossy, thick dark green leaves and...
Radish Seeds - Early Scarlet Globe
20-28 Days to maturity. Raphanus sativus. Early Scarlet Globe Radish Seeds. Non-GMO, annual, open-pollinated, heirloom, spring radish. This is an early to mature high-yielding variety known for its bright red...
Gourd Seeds, Bottle - Miniature
90 to 95 days to maturity. Lagenaria leucantha var gourdaMiniature Bottle Gourd Seeds. Heirloom, Annual, Non-GMO. These miniature bottle-shaped gourds grow up to 12 inches long, and have a diameter...
Melon Seeds - Ananas
90-110 Days to maturity. Cucumis melo. Ananas Melon Seeds. A non-GMO, annual, open-pollinated, heirloom, heat-tolerant Melon. Suitable for growing in garden plots, raised beds, and greenhouses. Originating from France, these...
Tomato Seeds - Slicing - Brandymaster Red Hybrid
80 Days to maturity (from transplant). Solanum lycopersicum. Brandymaster Red Hybrid Tomato Seeds. Non-GMO, annual, F1 hybrid, indeterminate, potato leaf, slicing tomato. Suitable for growing in garden plots, raised beds,...
Tomato Seeds - Slicing - Long Keeper
78 Days to maturity (from transplant). Solanum lycoperscium. Long Keeper Tomato Seeds. Non-GMO, annual, open-pollinated, heirloom, determinate, slicing tomato. Suitable for growing in garden plots, raised beds, and greenhouses. Resistant...
Spinach Seeds - Oceanside - Hybrid
Spinach Seeds - Oceanside - Hybrid. Non-GMO. Spinacea oleracea. 25-30 days maturity for baby leaf, 40-60 days to full maturity. Cool season annual. Oceanside is a slow - moderate growing...
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...
Watermelon Seeds - Icebox - Bush Sugar Baby (Organic)
75 Days to maturity. Citrullus lanatus. Bush Sugar Baby Watermelon Seeds. Non-GMO, annual, organic, open-pollinated, heirloom, heat tolerant, seeded, Icebox watermelon. Suitable for growing in garden plots and large containers...
Tomato Seeds - Slicing - Persimmon
80 Days to maturity (from transplant). Solanum lycopersicum. Persimmon Tomato Seeds. Non-GMO, warm season annual, open-pollinated, heirloom, indeterminate, slicing tomato. Suitable for growing in garden plots, raised beds, greenhouses. Persimmon...
Seed Potatoes - French Fingerling (Organic)
This item is a pre-order item and is expected to ship in March for spring planting. Other seeds, supplies, or kits ordered with this product may ship separately. This product...
Lettuce Seeds - Okayama Salad
50-60 days to maturity. Lactuca sativa ‘Okayama Salad’. Okayama Salad Lettuce Seeds. Non-GMO, cool-season annual heirloom. This early-maturing butterhead lettuce is a Japanese variety known for its delicate flavor and...
Tomato Seeds - Cherry - Gardener's Delight (Organic)
50-80 Days to maturity (from transplant). Solanum lycoperscium. Organic Gardeners Delight Tomato Seeds. Non-GMO, annual, organic, open-pollinated, heirloom, indeterminate, cherry tomato. Suitable for growing in garden plots, raised beds, and...
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