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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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...
Corn Seeds - Dent - Boone County White
110-120 Days to maturity. Zea mays. Boone County White Corn Seeds. Non-GMO, annual, open-pollinated, heirloom, Dent Corn. Suitable for growing in garden plots or raised beds. Corn tolerates heat and...
Corn Seeds - Popcorn - Rainbow Jewel
120 Days to maturity. Zea mays ’Rainbow Jewel Popcorn’. Rainbow Jewel Popcorn Corn Seeds. Non-GMO, warm weather hybrid annual. Rainbow Jewel Corn is a hybrid cross between a white popcorn...
Bean Seeds - Bush - Kentucky Wonder
50-65 Days to maturity. Phaseolus vulgaris. Kentucky Wonder Bush Bean Seeds. Non-GMO, annual, open-pollinated, heirloom, heat-tolerant, high-yielding, bush, snap green bean. Suitable for growing in containers, garden plots, raised beds,...
Cucumber Seeds - Pioneer Hybrid
50 Days to maturity. Cucumis sativus. Pioneer Hybrid Cucumber Seeds. Non-GMO, annual, F1 hybrid, gynoecious, pickling cucumber. Suitable for growing in fields, containers (with support), garden plots, raised beds, and...
Bean Seeds - Pole - Dark Green Yard Long
70 Days to maturity. Vigna unguiculata subsp. sesquipedalis. Dark Green Yard Long Bean Seeds. Non-GMO, annual, heat-tolerant, open-pollinated, heirloom, pole, snap, Asian, specialty bean. Suitable for growing in containers, garden...
Bean Seeds - Bush - Provider (Treated)
50-65 Days to maturity. Phaseolus vulgaris. Provider Bush Bean Treated Seeds. Non-GMO, annual, hybrid, open-pollinated, heirloom, high-yielding, heat-tolerant, bush, snap, green bean. Suitable for growing in containers, garden plots, raised...
Tomato Seeds - Salad - Czech Bush
70 Days to maturity (from transplant). Solanum lycoperscium. Czech Bush Tomato Seeds. Non-GMO, annual, hybrid, determinate, salad tomato. Suitable for growing in garden plots, raised beds, greenhouses, and containers. Stakeless,...
Bean Seeds - Bush - Black Valentine
50-65 Days to maturity. Phaseolus vulgaris. Black Valentine Bush Bean Seeds. Non-GMO, annual, open-pollinated, heirloom snap or shell bush bean. Suitable for growing in containers, garden plots, raised beds, and...
Tomato Seeds - Slicing - Bush Champion II Hybrid
70 Days to maturity (from transplant). Solanum lycoperscium. Bush Champion II Hybrid Tomato Seeds. Non-GMO, annual, F1 hybrid, determinate, slicing tomato. Suitable for growing in garden plots, raised beds, greenhouses,...
Celosia Seeds - Crested - Prestige Scarlet
85-95 Days to maturity. Celosia plumosa. Prestige Scarlet Crested Celosia Flower Seeds. Non-GMO, Annual. These celosias won the All American Selections for 1997 and continue to wow the world! They...
Melon Seeds - Cantaloupe - Golden Delicious
75 Days to maturity. Cucumis melo var. cantalupensis.. Golden Delicious Cantaloupe Melon Seeds. A non-GMO, annual, heirloom, open-pollinated, heat-tolerant Cantaloupe Melon. Suitable for growing in garden plots, raised beds, and...
Celosia Seeds - Plumed - New Look (Pelleted)
85-95 Days to maturity. Celosia plumosa. New Look Plumed Celosia Flower Seeds. Non-GMO, Annual. The All American Selections Winner for 1988 offers season-long garden color with constant blooms. These vibrant...
Dahlberg Daisy Seeds - Golden Fleece
70-77 Days to maturity. Thymophylla tenuiloba. Golden Fleece Dahlberg Daisy Seeds. Non-GMO, Annual. Golden Fleece Dahlberg daisy seeds grow a vigorous southwestern favorite ideal for many arid gardens across the...
Tomato Seeds - Cherry - Gum Drop Brown Hybrid
75 Days to maturity (from transplant). Solanum lycoperscium. Gum Drop Brown Hybrid Tomato Seeds. Non-GMO, annual, F1 hybrid, indeterminate, cherry tomato. Suitable for growing in garden plots, raised beds, and...
Tomato Seeds - Slicing - Beefsteak Pink
90 Days to maturity (from transplant). Solanum lycoperscium. Beefsteak Pink Tomato Seeds. Non-GMO, annual, heirloom, open-pollinated, indeterminate, slicing tomato. Suitable for growing in garden plots, raised beds, and greenhouses. Pink...
Tomato Seeds - Cherry - Patio Choice Red Hybrid
65 Days to maturity (from transplant). Solanum lycoperscium. Patio Choice Red Hybrid Tomato Seeds. Non-GMO, annual, F1 hybrid, determinate, cherry tomato. Suitable for growing in garden plots, raised beds, greenhouses,...
Tomato Seeds - Slicing - Dakota Sport (Organic)
65-75 Days to maturity (from transplant). Solanum lycopersicum. Organic Dakota Sport Tomato Seeds. Non-GMO, warm season annual, organic, open-pollinated, heirloom, indeterminate, slicing tomato. Suitable for growing in garden plots, raised...
Melon Seeds - Cantaloupe - Hearts of Gold (Organic)
80-90 Days to maturity. Cucumis melo. Organic 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...
Pumpkin Seeds - Mammoth Gold
Cucurbita maxima (110 days) Mammoth Gold Pumpkin produces nice yields of golden orange 40 to 60 lb pumpkins. These pumpkins have a nice smooth surface and thick pale orange flesh....
Pepper Seeds - Sweet - Miniature Chocolate Bell
75 Days to maturity (from transplant). Capsicum annuum. Miniature Chocolate Bell Pepper Seeds. Non-GMO, annual, open-pollinated, heirloom, drought tolerant, high-yielding, sweet pepper with no heat. 0 Scoville Heat Units. Suitable...
Eggplant Seeds - Kurume Long
60 days maturity after transplanting. Solanum melongena ’Kurume Long’. Kurume Long Eggplant Seeds. Non-GMO, warm-season, annual, hybrid. This popular open-pollinated Japanese variety has excellent fruit quality. Shiny, black fruits have...
Eggplant Seeds - Italian Rosa Bianca
75 days. The Italian Rosa Bianca variety of eggplant is large, round, and ideal for slicing. The Italian Rosa Bianca reaches maturity in seventy five days and is suitable for...
Pepper Seeds - Sweet - Cal Rose Red
75-85 Days to maturity (from transplant). Capsicum annuum. Cal Rose Red Pepper Seeds. Non-GMO, annual, open-pollinated, heirloom, sweet pepper with no heat. 0 Scoville Heat Units. Suitable for growing in...
Melon Seeds - Honeydew - Tam Dew
100 Days to maturity. Cucumis melo. Tam Dew Melon Seeds. A non-GMO, annual, open-pollinated, heirloom, heat tolerant, Honeydew Melon. Suitable for growing in garden plots, raised beds, and greenhouses. Resistant...
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,...
Watermelon Seeds - Icebox - Bush Jubilee
90 Days to maturity. Citrullus lanatus. Bush Jubilee Watermelon Seeds. Non-GMO, annual, open-pollinated, heirloom, heat tolerant, seeded, Icebox watermelon. Vines spread 3-5 ft. Produces watermelons that are about 10-13 lbs....
Corn Seeds - Popcorn - Neon Pink
85-105 Days to maturity. Zea mays. Neon Pink Corn Seeds. Non-GMO, annual, open-pollinated, heirloom, Pop Corn. Suitable for growing in garden plots or raised beds. Corn tolerates heat and drought-prone...
Pepper Seeds - Hot - Cayenne Orange
75 Days to maturity (from transplant). Capsicum annuum. Cayenne Orange Hot Pepper Seeds. Non-GMO, annual, open-pollinated, deer resistant, drought-tolerant, heat-tolerant, hot pepper with hot heat levels. 30,000 to 50,000 Scoville...
Nicotiana Seeds - Perfume Deep Purple (Pelleted)
63-70 days to maturity. Nicotiana alata. Nicotiana Perfume Deep Purple Seeds. Non-GMO, Annual. Ornamental. Perfume Deep Purple nicotiana seeds grow one of the world's most stunning, fragrant, and award-winning blooms...
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