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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Winter Rye - Organic - Cover Crop Seeds
This is organic rye grain (Secale cereale) - not Ryegrass (Lolium). It is not for over-seeding lawns. Organic. Annual. Heirloom. Non-GMO Organic winter rye cover crop is one of the...
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...
French Marigold Seeds - Durango Series (Coated)
56-63 Days to maturity. Tagetes patula. Durango Series French Marigold Seeds. Non-GMO, annual, open-pollinated. Durango Series French marigold seeds are an adorable, compact, and vibrant addition to grow in any...
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...
Pepper Seeds - Hot - Habanero Orange
100-109 Days to maturity (from transplant). Capsicum chinense. Habanero Orange Pepper Seeds. Non-GMO, annual, open-pollinated, heirloom, deer resistant, heat tolerant, drought tolerant, hot pepper with extra hot heat levels. 100,000...
Tomato Seeds - Cherry - Chocolate Cherry
70 Days to maturity (from transplant). Solanum lycoperscium. Chocolate Cherry Tomato Seeds. Non-GMO, annual, open-pollinated, indeterminate cherry tomato. Suitable for growing in garden plots, raised beds, greenhouses, and containers. Resistant...
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...
Adzuki Bean - Organic - Sprouting Seeds
3-4 Days to Harvest. Vigna angularis. Organic Adzuki Bean Sprouting Seeds. With over 30 grams of plant-based protein per cup, these organic sprouts will add nutrients and a fresh crunch...
Tomato Seeds - Paste - La Roma IV Hybrid
76 Days to maturity (from transplant). Solanum lycoperscium. La Roma IV Hybrid Tomato Seeds. Non-GMO, annual, F1 hybrid, determinate, paste tomato. Suitable for growing in garden plots, raised beds, and...
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...
Wildflower Seeds - Bee Mix
50-365 Days to maturity. Bee Friendly Wildflower Seeds Mix. A non-GMO mix of annuals and perennial bee-friendly wildflowers for zones 3-9. The Bee Friendly Wildflower Mix grows some of the...
Tomato Seeds - Slicing - Brandywine Pink
90 Days to maturity (from transplant). Solanum lycopersicum. Brandywine Pink Tomato Seeds. Non-GMO, annual, potato leaf, open-pollinated, heirloom, indeterminate, slicing tomato. Suitable for growing in garden plots, raised beds, and...
Onion Seeds - Short - Texas 1015 Super Sweet
110 Days to maturity. Allium cepa. Texas 1015 Super Sweet Onion Seeds. Non-GMO, annual, open-pollinated, heirloom, bulbing, short-day onion. Suitable for growing in greenhouses, garden plots, raised beds, and containers....
Impatiens Seeds - Accent Series
70-77 Days to maturity. Impatiens walleriana. Accent Series Impatiens Seeds. Non-GMO, hybrid, annual. Premium Quality Seeds. Accent Series seeds deliver the country's most popularly grown and undisputed summertime bloom. Impatiens...
Shiso Herb Seeds (Perilla) - Korean
70 days to maturity. Perilla frutescens var. frutescens. Korean Shiso Herb Seeds (Perilla). Warm season annual. Perilla is a lovely Korean herb that is a vivid green on the top...
Lemon Balm Seeds (Organic)
90 Days to maturity. Melissa officinalis. Organic Lemon Balm Seeds. Non-GMO, annual, perennial, organic, open-pollinated, heirloom. Suitable for growing in fields, containers, garden plots, and raised beds. Our Organic Lemon...
Pepper Seeds - Sweet - Mini Bell Yellow
60 Days to maturity (from transplant). Capsicum annuum. Mini Bell Yellow Pepper Seeds. Non-GMO, annual, open-pollinated, sweet-type pepper with no heat levels. 0 Scoville Heat Units. Suitable for growing in...
Tomato Seeds - Cherry - Rainbow Cherry Mix (Organic)
80 Days to maturity (from transplant). Solanum lycoperscium. Rainbow Cherry Mix (Organic) Tomato Seeds. Non-GMO, annual, open-pollinated, heirloom, indeterminate, cherry tomato. Suitable for growing in garden plots, raised beds, and...
Dill Seeds - Mammoth Long Island
60-70 days. Long Island Mammoth Dill Seeds. Anethum graveolens. Non-GMO. Heirloom. Known as "Elephant Dill" for significantly longer and feathered 24" tall silvery blue greens, Mammoth Long Island is an...
Eggplant Seeds - Long Purple (Organic)
80 days. The Long Purple variety of eggplant grows to be up to eight to ten inches long . The Long Purple reaches maturity in eighty days and is suitable...
Seed Assortment - Medicinal & Tea Herb
Grow your own fresh medicinal and tea herbs indoors year round. Cultivate your own fresh, medicinal and herbal tea herbs, and enjoy the fun and benefits of indoor gardening. Easy...
Basil Seeds - Lemon
Non-GMO, Lemon Basil Herb Seed from True Leaf Market. Ocimum basilicum x citriodorum is native to India. As basil has many different varieties, Lemon Basil Herb is considered non-sweet and...
Tomato Seeds - Slicing - Jet Star Hybrid
72 Days to maturity (from transplant). Solanum lycopersicum. Jet Star Hybrid Tomato Seeds. Non-GMO, warm season annual, F1 hybrid, indeterminate, slicing tomato. Suitable for growing in garden plots, raised beds,...
Seed Starter Kit - Medicinal & Herbal Tea
Grow your own fresh medicinal and tea herbs indoors year round. Cultivate your own fresh, medicinal and herbal tea herbs, and enjoy the fun and benefits of indoor gardening. Herb...
Purslane Seeds - Green
Non-GMO Purslane is ready to harvest in 50 days and is one of the most nutritionally dense foods you can grow in the garden. Performs best in hot weather and...
Tomato Seeds - Slicing - Black Krim (Organic)
75 Days to maturity (from transplant). Solanum lycopersicum. Organic Black Krim Tomato Seeds. Non-GMO, annual, organic, open-pollinated, heirloom, heat tolerant, indeterminate, slicing tomato. Suitable for growing in garden plots, raised...
Pea Seeds - Snap - Sugar Ann
Non-GMO. Heirloom. Sugar Ann Snap Pea Vegetable Garden Seeds. Pisum sativum. Sugar snap peas are a cross between garden and snow peas, as Sugar Ann Snap Peas were later developed...
Shiso Herb Seeds (Perilla) - Purple (Red)
Non-GMO, Heirloom Purple Shiso Perilla Herb Garden Seed from True Leaf Market. AKA: Red Shiso. Perilla frutescens var. crispa. Purple Shiso is a warm annual native to India and China....
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...
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