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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Cucumber Seeds - Pickling - Calypso Hybrid
50 Days to maturity. Cucumis sativus. Calypso Hybrid Cucumber Seeds. Non-GMO, annual, F1 hybrid, gynoecious, pickling cucumber. Suitable for growing in fields, containers (with support), garden plots, raised beds, and...
Seasonal Seed Assortment - Fall
The seeds in this collection were hand selected by our team of master gardeners to be planted in Fall months. Remember, not all seeds have to be planted in the...
Tomato Seeds - Slicing - Tangerine
85-90 Days to maturity (from transplant). Solanum lycopersicum. Tangerine Tomato Seeds. Non-GMO, warm season annual, open-pollinated, heirloom, indeterminate, slicing tomato. Suitable for growing in garden plots, raised beds, and greenhouses....
Okra Seeds - Cows Horn - Organic
Abelmoschus esculentus. (55 days) This heirloom okra dates back to around the Civil War. It has a twisted shape that resembles a cow's horn. These large pods can reach 14"...
Cauliflower Seeds - All Year Round
Non-GMO and Heirloom All Year Round Cauliflower is one of the most straightforward cauliflower varieties. Seed matures in 65 days and produces a large, tight, white head. In many zones,...
Tomato Seeds - Slicing - Amana Orange
85-90 Days to maturity (from transplant). Solanum lycoperscium. Amana Orange Tomato Seeds. Non-GMO, annual, open-pollinated, heirloom, indeterminate, slicing tomato. Suitable for growing in garden plots, raised beds, and greenhouses. Amana...
Tomato Seeds - Slicing - Phoenix Hybrid
70 Days to maturity (from transplant). Solanum lycopersicum. Phoenix Hybrid Tomato Seeds. Non-GMO, annual, F1 hybrid, determinate, heat tolerant, slicing tomato. Suitable for growing in garden plots, raised beds, and...
Tomato Seeds - Salad - Rutgers VF
80-90 Days to maturity (from transplant). Solanum lycopersicum. Rutgers VF Tomato Seeds. Non-GMO, warm season annual, open-pollinated, heirloom, determinate, salad tomato. Suitable for growing in garden plots, raised beds, and...
Pea Seeds - Snap - Taichung 13
70 days to maturity.Pisum sativum. Taichung 13 Snap Pea Seeds. Non-GMO, cool-season annual, heirloom. This early edible podded snap pea has white flowers. The vines are vigorous and prolific, producing...
Tomato Seeds - Slicing - Campbell 33
69 Days to maturity (from transplant). Solanum lycoperscium. Campbell 33 Tomato Seeds. Non-GMO, annual, open-pollinated, heirloom, determinate, slicing tomato. Suitable for growing in garden plots, raised beds, and greenhouses. Resistant...
Squash Seeds - Japanese, Winter - Blue Kuri
Squash Seeds - Japanese, Winter - Blue Kuri. Heirloom, Non-GMO. Cucurbita maxima. 45 days after flowering, 95-110 days to maturity. Warm season annual. A traditional open pollinated Japanese kabocha squash...
Pepper Seeds - Hot - Habanero Caribbean Yellow
110-119 Days to maturity (from transplant). Capsicum chinense. Caribbean Yellow Pepper Seeds. Non-GMO, annual, open-pollinated, heirloom, deer resistant, hot pepper with extremely hot heat levels. 400,000 to 500,000 Scoville Heat...
Lettuce Seeds - Freckles (Organic)
,Lactuca Sativa (26 days to baby-55 days mature) Freckles is unlike any romaine lettuce you will see. This romaine has bright green leaves that look like someone splatter-painted burgundy spots...
Spinach Seeds - Red Aztec - Organic
Chenopodium berlandieri Packet contains 250 mg (~350 seeds). If you've tried amaranth, lambs quarter, or goosefoot as salad or micro-greens, you should try this. Young seedlings begin bright red, then...
Pepper Seeds - Sweet - Golden Marconi
80-90 Days to maturity (from transplant). Capsicum annuum. Marconi Golden Pepper Seeds. Non-GMO, annual, open-pollinated, heirloom, high-yielding, drought tolerant, sweet pepper with no heat. 0 Scoville Heat Units. Suitable for...
Bean Seeds - Bush - Kentucky Dreamer
50-54 Days to maturity. Phaseolus vulgaris. Kentucky Dreamer Bush Bean Seeds. Non-GMO, annual, open-pollinated, heirloom, heat-tolerant, resistant to BCMV, high-yielding, bush, snap green bean. Suitable for growing in containers, garden...
Lettuce Seeds - Summer 38 Celtuce
75-85 day maturity. Lactuca sativa var. asparagina ‘Summer 38 Celtuce’. Summer 38 Celtuce Lettuce Seeds. Non-GMO, cool-season annual heirloom. This variety of Chinese stem lettuce has pointed, light green leaves....
Pepper Seeds - Sweet - Tender Bell Hybrid
40-49 Days to maturity (from transplant). Capsicum annuum. Tender Bell Hybrid Pepper Seeds. Non-GMO, annual, F1 hybrid, high yielding, sweet pepper with no heat levels. 0 Scoville Heat Units. Suitable...
Pepper Seeds - Hot - Cayenne Fiesta Blend
60-69 Days to maturity (from transplant). Capsicum annuum. Cayenne Fiesta Blend Pepper Seeds. Non-GMO, annual, open-pollinated, heirloom, deer resistant, heat tolerant, drought tolerant, hot pepper with hot heat levels. 30,000...
Spinach Seeds - Strawberry - Organic
Chenopodium capitatum Packet contains 250 mg (~500 seeds). Not technically a spinach. Also called strawberry blite or beetberry for the red fruits that form at maturity. These are pleasantly sweet,...
Eggplant Seeds - Casper White
Casper (White) eggplants have a shiny exterior with white flesh and skin. Fruits grow to be 6-10 inches long and around 3 inch wide. Plant seeds .25 inch deep in...
Pepper Seeds - Hot - Habanero Caribbean Red (Organic)
110-119 Days to maturity (from transplant). Capsicum chinense. Caribbean Red Organic Pepper Seeds. Non-GMO, annual, organic, open-pollinated, heirloom, high yielding, deer resistant, heat tolerant, drought tolerant, hot type pepper with...
Pepper Seeds - Hot - Ancho Sanchez Hybrid
70-79 Days to maturity (from transplant). Capsicum annuum. Ancho Sanchez Hybrid Pepper Seeds. Non-GMO, annual, F1 hybrid, hot-type pepper with mild heat levels. 1,000 to 2,000 Scoville Heat Units. Suitable...
Tomato Seeds - Slicing - Momotaro Gold Hybrid
80 Days to maturity (from transplant). Solanum lycopersicum. Momotaro Gold Hybrid Japanese Tomato Seeds. Non-GMO, warm season annual, F1 hybrid, indeterminate, slicing tomato. Suitable for growing in garden plots, raised...
Carrot Seeds - Lunar White
65-80 days. The Lunar White carrot is a unique pale white variety. Each root grows to be up to six inches long, and has a classic tapered end. The roots...
Gourd Seeds - Emerald - Hybrid
80-90 days to maturity. Luffa cylindrica ’Emerald’. Emerald Gourd Seeds. Non-GMO warm-season annual hybrid. This beautiful plant produces early maturing, smooth-type fruits that average 45-50cm long, 4-5 cm in diameter,...
Asparagus Seeds - UC 157 F1
Second season harvest. Asparagus officinalis. UC 157 F1 Asparagus Seeds. Non-GMO, perennial, F1 hybrid. This crop is suitable for garden plots, raised beds, and fields. Classic UC Riverside hybrid known...
Chinese Cabbage Seeds - Kyoto No. 3
Chinese Cabbage Seeds - Kyoto No. 3. Heirloom, Non-GMO. Brassica rapa Pekinensis group. 80 days. Cool season annual. A Japanese heirloom or dento yasai variety of Japan, this cabbage has...
Gourd Seeds - Bitter
Bitter Gourd Seeds. 80 Days. Momordica charanita. Non-GMO, Heirloom, Open Pollinated. Annual. AKA: Bitter Melon, Balsam Pear, Foo Gwa. Warty, green, tapered fruits that grow 8 to 10 inches long...
Cucumber Seeds - Parisian Pickle
60 Days to maturity. Cucumis sativus. Parisian Pickle Cucumber Seeds. Non-GMO, annual, open-pollinated, heirloom, monoecious, pickling cucumber. Suitable for growing in fields, containers (with support), garden plots, raised beds, and...
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