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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Wheat - Soft White (Organic) - Sprouting Seeds
1-2 Days to Harvest. Triticum aestivum. Organic Soft White Wheat Sprouting Seeds. Organic. Non-GMO. Sprouting. Excellent Germination Rate. Soft white wheat berries are excellent for sprouting easily and quickly. They...
Asparagus Seeds - UC 72
2-3 years, perennial.Non-GMO, open pollinated. The UC 72 Asparagus variety was created to be tolerant to drought and Fusarium Wilt. Plants produce large yields after being in the ground for...
Orach Seeds (French Spinach) - Red Fire
Non-GMO, Heirloom Red Fire Orach Vegetable Garden Seed from True Leaf Market. Atriplex hortensis. Red Fire Orach Seeds originated in Egypt and Europe, as one of the oldest cool season...
Corn Seeds - Sweet - Bodacious R/M F1 Hybrid
80-90 Days to maturity. Zea mays. Bodacious R/M F1 Hybrid Corn Seeds. Non-GMO, annual, hybrid, Sweet Corn. Suitable for growing in garden plots or raised beds. Corn tolerates heat and...
Echinacea Seeds - White Swan
70-84 days. Non-GMO, Heirloom White Swan Echinacea Herb Garden Seed from True Leaf Market. Echinacea purpurea. Echinacea grows as a warm perennial native to North America. Cultivated in 1987, this...
Pepper Seeds - Hot - Hungarian Yellow Wax
58 to 85 Days to maturity (from transplant). Capsicum annuum. Pepper, Hot - Hungarian Hot Wax - Organic Pepper Seeds. Non-GMO, annual, open-pollinated, heirloom, deer resistant, heat tolerant, drought tolerant,...
Mustard Seeds - Osaka Purple
21 to 45 days. An outstanding mustard of dark green-purple leaves with bright white veins. Harvest at 4 to 6 inches for salad or allow it to grow to full...
French Marigold Seeds - Janie Series
56-63 Days to maturity. Tagetes patula. Janie Series Marigold Seeds. Non-GMO, annual, open-pollinated. Growing Janie Series Marigold seeds this season is an effortless and award-winning way to dash some summer...
Sorghum Seeds - Rox Orange Syrup Cane
Rox Orange Syrup Cane. Sorghum. Sorghum bicolor. 70-80 days. Open Pollinated. Heirloom. Non-GMO. Rox Orange Syrup Cane is a tall, old-fashioned sweet sorghum grown for its sweet juice rather than...
Parsley Seeds - Italian Giant
70-80 Days to maturity. Petroselinum crispum. Italian Giant Parsley Seeds. Non-GMO, annual, open-pollinated, heirloom. Suitable for growing in fields, containers, garden plots, raised beds, and greenhouses. Italian Giant parsley brings...
Seed Assortment - Flower Garden
The Flower Garden Seed Assortment is a collection of our loveliest, most popular, and easy-to-grow flower seeds for planting. Explore your creativity with a wide selection of flower colors and...
Onion Seeds - Short - Texas Grano 502 (Organic)
110 Days to maturity. Allium cepa. Organic Texas Grano 502 Onion Seeds. Non-GMO, annual, organic, open-pollinated, heirloom, cold tolerant, bulbing, short-day onion. Suitable for growing in greenhouses, garden plots, raised...
Lettuce Seeds - Tom Thumb
Tom Thumb Butterhead Lettuce Seeds. 55-60 Days. Heirloom, Non-GMO. Lactuca sativa. Highly productive, dwarfed bibb lettuce that is quick to mature no bigger than a baseball or tennis ball, the...
Cucumber Seeds - Pickling - Wisconsin SMR
55-58 Days to maturity. Cucumis sativus. Wisconsin SMR-58 Pickling Cucumber Cucumber Seeds. Non-GMO, annual, open-pollinated, heirloom, monoecious, pickling cucumber. Suitable for growing in fields, containers (with support), garden plots, raised...
Parsley Seeds - Triple Moss Curled
70-80 Days to maturity. Petroselinum crispum. Triple Moss Curled Parsley Seeds. Non-GMO, annual, open-pollinated, heirloom. Suitable for growing in fields, containers, garden plots, raised beds, and greenhouses. Triple Moss Curled...
Eggplant Seeds - Purple Shine - Hybrid
65 days to maturity after transplant. Solanum melongena ’Purple Shine’. Purple Shine Eggplant Seeds. Non-GMO, warm-season, annual, hybrid. This is a popular Chinese type eggplant variety. Fruits are firm and...
Marigold Seeds - Nematode Control
60-70 Days to maturity. Tagetes patula. Nematode Control Marigold Seeds. Non-GMO, annual, open-pollinated. This drought-tolerant and deer-resistant marigold is an outstanding tool in any gardener’s tool belt. As a specially...
Radish Seeds - Lady Slipper
Non-GMO Heirloom Lady Slipper Radish is ready in 28 days. Beautiful soft-pink radish has an elongated body and roots. This radish has a smooth appearance and a crisp, mild, sweet...
Cucumber Seeds - National Pickling
50-70 Days to maturity. Cucumis sativus. National Pickling Cucumber Seeds. Non-GMO, annual, open-pollinated, heirloom, monoecious, pickling cucumber. Suitable for growing in fields, containers (with support), garden plots, raised beds, and...
Whole Oats (Organic) - Cover Crop Seeds
60 Days. Avena sativa. Oat is a cool weather crop that can withstand light frost but will die back in the winter or at temperatures below 5 to 10°F. This...
Superfood Mix - Microgreens Seeds (Organic)
5-7 Days to maturity. See the attributes table below for Latin names. Organic Superfood Microgreens Mix Seeds. These nutrient-packed organic greens bring an array of flavors to your plate. From...
Squash Seeds - Summer - Fordhook Zucchini
50-60 Days to maturity. Cucurbita pepo. Fordhook Summer Zucchini Seeds. Non-GMO, annual, open-pollinated, heirloom. 1942 AAS winner. Suitable for growing in fields, garden plots, raised beds, and greenhouses. Resistant to...
Cat Grass Seeds - Wheatgrass (Organic)
7-10 Days to Harvest. Triticum aestivum. Organic Cat Grass Sprouting Seeds. Non-GMO. High Germination. Cat & Pet Grass Seed Blend. Non-GMO, Certified Organic by OTCO. Your pets crave the sweet...
Pepper Seeds - Sweet - Fushimi
65 Days to maturity (from transplant). Capsicum annuum. Fushimi Pepper Seeds. Non-GMO, annual, open-pollinated, heirloom, high-yielding, sweet pepper with mild heat levels. 1,000 to 2,500 Scoville Heat Units. Suitable for...
Eggplant Seeds - Little Finger Purple
Solanum melongena (68 days) Little Fingers grow in clusters that almost look like hands. They grow in clusters of 3-5 purple, slim fruits. ~7,850 seeds/oz. Eggplant Seeds - Little Finger...
Broccoli Seeds - Chinese Broccoli - Kailaan
Broccoli Seeds - Chinese Broccoli - Kailaan. Heirloom, Non-GMO. Brassica oleracea var alboglabra. Also known as cai ro, chair lan, Chinese broccoli, Chinese kale, gailaan, gai lan, gailon, gelancai, guy...
Bean Seeds - Pole - Akasanjaku Yard Long
75 Days to maturity. Vigna unguiculata subsp. sesquipedalis. Akasanjaku Yard Long Bean Seeds. Non-GMO, annual, open-pollinated, heat-tolerant, heirloom, pole, snap, Asian, specialty bean. Suitable for growing in containers, garden plots,...
Mustard - Mizuna Red Streaks - Microgreens Seeds
Up to 12 days. Organic Red Streaks Mizuna Mustard Microgreens Seeds. A flavorful mustard sought after because of the spectacular red-purple highlights. Grows fast and tenacious. Mustard Microgreens are easy...
Gourd Seeds - Nam Tao Ngam - India Type -...
45-50 Days to maturity. Lagenaria siceraria. India Type Nam Tao Ngam Hybrid Seeds. Annual, Hybrid. India Type Nam Tao Ngam produces vigorously growing vines and 18-20" long bright green gourd...
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