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.

50 100 true //store.trueleafmarket.com/cdn/shop/t/54/assets/review-fallback.json?v=33078429469613971781712858278
Legend: H for Heirloom, O for Organic, A for AAS Winner, F for staff favorites
174 Items
{ "manual": "Featured", "most-relevant": "Most relevant", "best-selling": "Best selling", "title-ascending": "Alphabetically, A-Z", "title-descending": "Alphabetically, Z-A", "price-ascending": "Price, low to high", "price-descending": "Price, high to low", "created-ascending": "Date, old to new", "created-descending": "Date, new to old" }
Armeria Seeds - Maritima Seriesmid size pouch type seed packaging for - Armeria Maritima Series
-0
Armeria Seeds - Maritima Series
Starting at $3.29
Tulip Bulbs - Double Early - Mixed
-0
Tulip Bulbs - Double Early - Mixed
Starting at $18.99
Tulip Bulbs - Double Late - Mixed
-0
Tulip Bulbs - Double Late - Mixed
Starting at $18.99
Peony Bulbs - Coral Sunset
-0
Peony Bulbs - Coral Sunset
Starting at $22.99
Bellis (English Daisy) Seeds - Pomponette MixBellis (English Daisy) Seeds - Pomponette Mix
-0
Bellis (English Daisy) Seeds - Pomponette Mix
Starting at $3.39
Peony Bulbs - Shirley Temple
-0
Peony Bulbs - Shirley Temple
Starting at $16.99
Linaria Seeds - Spurred Snapdragon - Northern Lights
-0
Heirloom
Staff Favorite
Linaria Seeds - Spurred Snapdragon - Northern Lights
Starting at $2.99
Celosia Seeds - Plumed - Texas Plume Mixed (Organic)
-0
Organic
Celosia Seeds - Plumed - Texas Plume Mixed (Organic)
Starting at $6.09
Wildflower Seeds - Annual MixWildflower Seeds - Annual Mix
-0
Wildflower Seeds - Annual Mix
Starting at $3.99
Hyacinth Bulbs - Mixed
-0
Hyacinth Bulbs - Mixed
Starting at $13.99
Peony Bulbs - Dr. Alexander Fleming
-0
Peony Bulbs - Dr. Alexander Fleming
Starting at $15.99
Cosmos Seeds - Sensation Mix (Organic)mid size pouch type seed packaging for - Tomato Slicing Yellow Perfection Organic
-0
AAS Winner
Heirloom
Organic
Cosmos Seeds - Sensation Mix (Organic)
Starting at $3.59
Bellis (English Daisy) Seeds - MixedBellis (English Daisy) Seeds - Mixed
-0
Bellis (English Daisy) Seeds - Mixed
Starting at $3.39
Arabis Seeds - Spring Charmmid size pouch type seed packaging for - Arabis Spring Charm
-63%
Arabis Seeds - Spring Charm
Starting at $1.99
California Poppy Seeds - Carmine Kingmid size pouch type seed packaging for - Zinnia Magellan Series Orange
-0
California Poppy Seeds - Carmine King
Starting at $2.99
Peony Bulbs - SorbetPeony Bulbs - Sorbet
-0
Peony Bulbs - Sorbet
Starting at $16.99
Hyacinth Bulbs - Pink Fondant
-0
Hyacinth Bulbs - Pink Fondant
Starting at $13.99
Corn Seeds - Popcorn - Calico
-0
Heirloom
Corn Seeds - Popcorn - Calico
Starting at $3.09
Peony Bulbs - Sarah BernhardtPeony Bulbs - Sarah Bernhardt
-0
Peony Bulbs - Sarah Bernhardt
Starting at $17.99
Arabis Seeds - Compinkie
Starting at $4.79
Zinnia Seeds - Queeny Lime Blush
Starting at $6.39
Begonia Tubers - Samba Pastel Mixture
$9.70 $19.39
Begonia Tubers - Bi-Color Picotee Mixture
$9.00 $17.99
Rhubarb Crowns - Crimson Red
Starting at $13.98
Gladiolus Bulbs - Dazzling Tangerine Mixture
$7.00 $13.99
Gladiolus Bulbs - Mardi Gras Mixture
$7.00 $13.99
Calla Lily Bulbs - Mixture
$14.00 $27.99
Cosmos Seeds - Dwarf Sensation Mix - Organic
Starting at $3.99
Ranunculus Bulbs - Aviv Mix
$16.99
Begonia Tubers - Odorata - Angelique
$7.50 $14.99
Ranunculus Bulbs - Aviv Pastel Mix
$16.99
Dahlia Bulbs - Emory Paul
$11.50 $22.99
[ { "featured_image": "files/armeria-maritima-series-flower-seeds-Comp.jpg", "secondary_image": "products/non-gmo-seed-bag-1-oz-sm_d5540a1f-7fa6-41b6-a730-4b86880ab377.png", "price": 329, "handle": "armeria-maritima-series-flower-seeds", "title": "Armeria Seeds - Maritima Series", "url": "/products/armeria-maritima-series-flower-seeds", "available": true }, { "featured_image": "files/arabis-compinkie-flower-seeds-Comp.jpg", "secondary_image": "products/non-gmo-seed-bag-1-oz-sm_67a2b4ad-baaa-49a5-91d8-bf7fb8cc378c.png", "price": 479, "handle": "arabis-compinkie-flower-seeds", "title": "Arabis Seeds - Compinkie", "url": "/products/arabis-compinkie-flower-seeds", "available": false }, { "featured_image": "files/1718814840_mixed-doubles-early-comp_ddf956d5-fd96-49a9-be8c-89a7aad63d8d.jpg", "secondary_image": "", "price": 1899, "handle": "tulip-bulbs-double-early-mixed", "title": "Tulip Bulbs - Double Early - Mixed", "url": "/products/tulip-bulbs-double-early-mixed", "available": true }, { "featured_image": "files/zinnia-seeds-queen-lime-bush-Comp.jpg", "secondary_image": "files/MVS_1_lb_a88c973a-6d22-4df1-9587-e9297bc58652.jpg", "price": 639, "handle": "zinnia-seeds-queen-lime-bush", "title": "Zinnia Seeds - Queeny Lime Blush", "url": "/products/zinnia-seeds-queen-lime-bush", "available": false }, { "featured_image": "files/1718815300_mixed-doubles-late-wm-comp_59139669-64e1-41d5-ba13-8f027efaa15d.jpg", "secondary_image": "", "price": 1899, "handle": "tulip-bulbs-double-late-mixed", "title": "Tulip Bulbs - Double Late - Mixed", "url": "/products/tulip-bulbs-double-late-mixed", "available": true }, { "featured_image": "files/Peony-Coral-Sunset-wm-comp.jpg", "secondary_image": "", "price": 2299, "handle": "peony-bulbs-coral-sunset", "title": "Peony Bulbs - Coral Sunset", "url": "/products/peony-bulbs-coral-sunset", "available": true }, { "featured_image": "files/Bellis-English-Daisy-Pomponette-Mixed-comp_2458cabd-7116-44d8-957d-e3b4832f2676.jpg", "secondary_image": "files/Flower_1lb_f72b1d2c-6f96-4bc2-be1d-1df7d68cd39d.jpg", "price": 339, "handle": "bellis-english-daisy-seeds-pomponette-mix", "title": "Bellis (English Daisy) Seeds - Pomponette Mix", "url": "/products/bellis-english-daisy-seeds-pomponette-mix", "available": true }, { "featured_image": "files/shirley-temple-peony-comp.jpg", "secondary_image": "", "price": 1699, "handle": "peony-bulbs-shirley-temple", "title": "Peony Bulbs - Shirley Temple", "url": "/products/peony-bulbs-shirley-temple", "available": true }, { "featured_image": "files/linaria-seeds-spurred-snapdragon-northern-lights-Comp_1.jpg", "secondary_image": "", "price": 299, "handle": "linaria-seeds-spurred-snapdragon-northern-lights", "title": "Linaria Seeds - Spurred Snapdragon - Northern Lights", "url": "/products/linaria-seeds-spurred-snapdragon-northern-lights", "available": true }, { "featured_image": "files/1738092039_celosia_plumed_texas_plume_mixed_organic_comp_c16c549d-b7cc-42cd-988f-f47214a89c8d.jpg", "secondary_image": "", "price": 609, "handle": "celosia-seeds-plumed-texas-plume-mixed-organic", "title": "Celosia Seeds - Plumed - Texas Plume Mixed (Organic)", "url": "/products/celosia-seeds-plumed-texas-plume-mixed-organic", "available": true }, { "featured_image": "files/Wildflower-Annual-Mix_4459db0e-b309-4238-b977-a2fd8d193cfd.jpg", "secondary_image": "files/Flower_1lb_0cd12749-51a1-446b-877d-b8e645b636b4.jpg", "price": 399, "handle": "wildflower-seeds-annual-mix", "title": "Wildflower Seeds - Annual Mix", "url": "/products/wildflower-seeds-annual-mix", "available": true }, { "featured_image": "files/Hyacinth-Mixed-wm-comp.jpg", "secondary_image": "", "price": 1399, "handle": "hyacinth-bulbs-mixed", "title": "Hyacinth Bulbs - Mixed", "url": "/products/hyacinth-bulbs-mixed", "available": true }, { "featured_image": "files/Peony-Dr-Alexander-Fleming-comp.jpg", "secondary_image": "", "price": 1599, "handle": "peony-bulbs-dr-alexander-fleming", "title": "Peony Bulbs - Dr. Alexander Fleming", "url": "/products/peony-bulbs-dr-alexander-fleming", "available": true }, { "featured_image": "files/flower_cosmo_dwarf_sensation_mix.jpg", "secondary_image": "files/Sustainable_1_lb.jpg", "price": 359, "handle": "cosmos-seeds-sensation-mix-organic", "title": "Cosmos Seeds - Sensation Mix (Organic)", "url": "/products/cosmos-seeds-sensation-mix-organic", "available": true }, { "featured_image": "files/1742839515_bellis_english_daisy_mixed_comp_09a7870f-8f05-4f71-96fd-12f631707d6c.jpg", "secondary_image": "files/mountain-valley-seed-company-package_c7fa0bed-7d66-4972-bb6c-0eb1a651f5b4.jpg", "price": 339, "handle": "bellis-english-daisy-seeds-mixed", "title": "Bellis (English Daisy) Seeds - Mixed", "url": "/products/bellis-english-daisy-seeds-mixed", "available": true }, { "featured_image": "files/1736452317_begonia_tubers_samba_pastel_mixture_comp_b6a3397c-3db6-46f4-96fe-edef0b985a97.jpg", "secondary_image": "", "price": 970, "handle": "begonia-tubers-samba-pastel-mixture", "title": "Begonia Tubers - Samba Pastel Mixture", "url": "/products/begonia-tubers-samba-pastel-mixture", "available": false }, { "featured_image": "files/1736451629_begonia_tubers_bi_color_picotee_mixture_comp_56b8a575-d09c-4d1a-b7fc-a109ae984e69.jpg", "secondary_image": "", "price": 900, "handle": "begonia-tubers-bi-color-picotee-mixture", "title": "Begonia Tubers - Bi-Color Picotee Mixture", "url": "/products/begonia-tubers-bi-color-picotee-mixture", "available": false }, { "featured_image": "files/Rhubarb_-_Crimson_Red.jpg", "secondary_image": "", "price": 1398, "handle": "rhubarb-roots-crimson-red", "title": "Rhubarb Crowns - Crimson Red", "url": "/products/rhubarb-roots-crimson-red", "available": false }, { "featured_image": "files/1736451115_gladiolus_bulbs_dazzling_tangerine_mixture_comp_a0f10d46-7878-492a-a43d-72de6721e09b.jpg", "secondary_image": "", "price": 700, "handle": "gladiolus-bulbs-dazzling-tangerine-mixture", "title": "Gladiolus Bulbs - Dazzling Tangerine Mixture", "url": "/products/gladiolus-bulbs-dazzling-tangerine-mixture", "available": false }, { "featured_image": "files/1736451311_gladiolus_bulbs_mardi_gras_mixture_comp_ddcbb466-9264-4b5e-b3e9-e603af50e21c.jpg", "secondary_image": "", "price": 700, "handle": "gladiolus-bulbs-mardi-gras-mixture", "title": "Gladiolus Bulbs - Mardi Gras Mixture", "url": "/products/gladiolus-bulbs-mardi-gras-mixture", "available": false }, { "featured_image": "files/arabis-spring-charm-flower-seeds-Comp.jpg", "secondary_image": "products/non-gmo-seed-bag-1-oz-sm_affc4731-a635-4113-b871-58b5aedc113d.png", "price": 199, "handle": "arabis-spring-charm-flower-seeds", "title": "Arabis Seeds - Spring Charm", "url": "/products/arabis-spring-charm-flower-seeds", "available": true }, { "featured_image": "files/california-poppy-carmine-king-COMP.jpg", "secondary_image": "files/MVS_1_lb.jpg", "price": 299, "handle": "california-poppy-seeds-carmine-king", "title": "California Poppy Seeds - Carmine King", "url": "/products/california-poppy-seeds-carmine-king", "available": true }, { "featured_image": "files/1736452571_calla_lily_bulbs_mixture_comp_5869332d-b573-4732-ae9f-d4c2bcadcac2.jpg", "secondary_image": "", "price": 1400, "handle": "calla-lily-bulbs-mixture-1", "title": "Calla Lily Bulbs - Mixture", "url": "/products/calla-lily-bulbs-mixture-1", "available": false }, { "featured_image": "files/cosmos-seeds-dwarf-sensation-mix-organic-Comp.jpg", "secondary_image": "products/SSC-organic-generic-packet-com_f713f68a-8acb-4fd8-9009-e3395594d5eb.jpg", "price": 399, "handle": "cosmos-seeds-dwarf-sensation-mix-organic", "title": "Cosmos Seeds - Dwarf Sensation Mix - Organic", "url": "/products/cosmos-seeds-dwarf-sensation-mix-organic", "available": false }, { "featured_image": "files/1749840271_sorbet_peony_comp_e0566b65-9e7a-4b63-a638-7f323961acaa.jpg", "secondary_image": "files/1730823111_1730744403_peony_coral_sunset_3_bulbs_comp_f073a682-9155-4105-835f-c4c45aacaf43.jpg", "price": 1699, "handle": "peony-bulbs-sorbet", "title": "Peony Bulbs - Sorbet", "url": "/products/peony-bulbs-sorbet", "available": true }, { "featured_image": "files/Hyacinth-Pink-Surprise-wm-comp.jpg", "secondary_image": "", "price": 1399, "handle": "hyacinth-bulbs-pink-fondant", "title": "Hyacinth Bulbs - Pink Fondant", "url": "/products/hyacinth-bulbs-pink-fondant", "available": true }, { "featured_image": "files/1744900672_corn_popcorn_miniature_calico_wm_comp_4ceb2a40-a338-4869-99e3-efba72fb70f9.jpg", "secondary_image": "", "price": 309, "handle": "corn-seeds-popcorn-calico", "title": "Corn Seeds - Popcorn - Calico", "url": "/products/corn-seeds-popcorn-calico", "available": true }, { "featured_image": "files/1757350597_ranunculus_mix_comp_e26618dc-fcaf-44ce-a683-449a4e4ef940.jpg", "secondary_image": "", "price": 1699, "handle": "ranunculus-bulbs-aviv-mix", "title": "Ranunculus Bulbs - Aviv Mix", "url": "/products/ranunculus-bulbs-aviv-mix", "available": false }, { "featured_image": "files/Begonia_Odorata_Flowers.jpg", "secondary_image": "", "price": 750, "handle": "begonia-tubers-odorata-angelique", "title": "Begonia Tubers - Odorata - Angelique", "url": "/products/begonia-tubers-odorata-angelique", "available": false }, { "featured_image": "files/1761145388_ranunculus_bulbs_aviv_pastel_mix_comp_4bc9fb46-dccd-4f97-843c-a3864aab783f.jpg", "secondary_image": "", "price": 1699, "handle": "ranunculus-bulbs-aviv-pastel-mix", "title": "Ranunculus Bulbs - Aviv Pastel Mix", "url": "/products/ranunculus-bulbs-aviv-pastel-mix", "available": false }, { "featured_image": "files/Dahlia_Emory_Paul_Flower.jpg", "secondary_image": "", "price": 1150, "handle": "dahlia-bulbs-emory-paul", "title": "Dahlia Bulbs - Emory Paul", "url": "/products/dahlia-bulbs-emory-paul", "available": false }, { "featured_image": "files/1749834736_peony_sarah_bernhardt_comp_7169abba-c52a-47dc-84b0-6a45ad419e90.jpg", "secondary_image": "files/1730823111_1730744403_peony_coral_sunset_3_bulbs_comp_93be3c22-50c8-416d-aea3-cd7d2923a171.jpg", "price": 1799, "handle": "peony-bulbs-sarah-bernhardt", "title": "Peony Bulbs - Sarah Bernhardt", "url": "/products/peony-bulbs-sarah-bernhardt", "available": true } ]