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May is the month when the gardening season shifts into high gear across most of the country. In cold-winter zones, the last frost is finally behind us, and it's time to get warm-season crops in the ground. In mild-winter zones, the garden is already humming, and the focus turns to keeping up with rapid spring growth. And in the warmest zones, the race is on to get heat-lovers established before summer temperatures take over. Whatever your zone, May is a month of momentum.


Zones 1-7a: May is the main planting kickoff in cold-winter zones, when gardens finally move from starts and prep into full outdoor action. Early May often still favors hardy transplants and direct-sown cool-season crops, while mid-to-late May is when many areas can safely set out warm-season plants as frost risk drops. Keep hardening off seedlings, use row cover if nights run cold, and focus on steady watering and early weed control so young plants establish quickly.

Zones 7b-9a: 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.

Zones 9b-12: May marks the shift into early summer conditions in the warm-winter zones, and gardens respond fast with rapid growth. Warm-season crops should be planted and growing strongly now, and succession sowing keeps harvests coming even as temperatures climb. Stay ahead of heat stress by mulching, watering consistently, and planting in the coolest part of the day - and in the hottest areas, begin planning for shade cloth and other summer protection.

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
2361 Items
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Mung Bean - Organic - Sprouting SeedsMung Bean - Organic - Sprouting Seeds
-0
Heirloom
Organic
Mung Bean - Organic - Sprouting Seeds
Starting at $3.59
Carrot Seeds - Tendersweetmid size pouch type seed packaging for - Carrot Tendersweet
-0
Heirloom
Carrot Seeds - Tendersweet
Starting at $2.99
Cucumber Seeds - Pickling - Boston Picklingmid size pouch type seed packaging for - Cucumber Pickling Boston Pickling
-0
Heirloom
Cucumber Seeds - Pickling - Boston Pickling
Starting at $2.99
Spinach Seeds - Giant Noblemid size pouch type seed packaging for - Spinach Giant Noble
-0
AAS Winner
Heirloom
Spinach Seeds - Giant Noble
Starting at $2.99
Beet Seeds - Detroit Dark Redmid size pouch type seed packaging for - Beet Detroit Dark Red
-0
Heirloom
Beet Seeds - Detroit Dark Red
Starting at $2.99
Squash Seeds - Summer - Zucchini Black Beautymid size pouch type seed packaging for - Squash Summer Zucchini Black Beauty
-0
AAS Winner
Heirloom
Squash Seeds - Summer - Zucchini Black Beauty
Starting at $2.99
Squash Seeds - Summer - Zucchini Black Beauty (Organic)
-0
AAS Winner
Heirloom
Organic
Squash Seeds - Summer - Zucchini Black Beauty (Organic)
Starting at $3.39
Pepper Seeds - Sweet - Big RedPepper Seeds - Sweet - Big Red
-0
Pepper Seeds - Sweet - Big Red
Starting at $2.99
Broccoli Seeds - Waltham 29mid size pouch type seed packaging for - Broccoli Waltham 29
-0
Heirloom
Broccoli Seeds - Waltham 29
Starting at $2.99
Pea Seeds - Snap - Sugar SnapPea Seeds - Snap - Sugar Snap
-0
AAS Winner
Heirloom
Pea Seeds - Snap - Sugar Snap
Starting at $3.09
Lettuce Seeds - Mixed Greens - Gourmet MixtureLettuce Seeds - Mixed Greens - Gourmet Mixture
-0
Heirloom
Lettuce Seeds - Mixed Greens - Gourmet Mixture
Starting at $2.99
Bean Seeds - Bush - Blue Lake 274mid size pouch type seed packaging for - Bean Bush Blue Lake 274
-0
Heirloom
Bean Seeds - Bush - Blue Lake 274
Starting at $2.99
Cabbage Seeds - Golden Acremid size pouch type seed packaging for - Cabbage Golden Acre
-0
Heirloom
Cabbage Seeds - Golden Acre
Starting at $2.99
Broccoli Seeds - Waltham 29 (Organic)small size packet type seed packaging for - Broccoli Waltham 29 Organic
-0
Heirloom
Organic
Broccoli Seeds - Waltham 29 (Organic)
Starting at $3.59
Squash Seeds - Winter - Waltham ButternutSquash Seeds - Winter - Waltham Butternut
-0
AAS Winner
Heirloom
Squash Seeds - Winter - Waltham Butternut
Starting at $2.99
Tomato Seeds - Paste - Roma VFTomato Seeds - Paste - Roma VF
-0
Heirloom
Tomato Seeds - Paste - Roma VF
Starting at $3.79
Bean Seeds - Pole - Blue Lake FM1Kmid size pouch type seed packaging for - Bean Pole Blue Lake FM1K
-0
Heirloom
Bean Seeds - Pole - Blue Lake FM1K
Starting at $3.58
Emergency Heirloom Bug Out Seed BagEmergency Heirloom Bug Out Seed Bag
-0
Heirloom
Emergency Heirloom Bug Out Seed Bag
$39.74
Pumpkin Seeds - Sugar Piemid size pouch type seed packaging for - Pumpkin Sugar Pie
-0
Heirloom
Pumpkin Seeds - Sugar Pie
Starting at $2.99
Pepper Seeds - Sweet - Cal Wonder (Organic)small size packet type seed packaging for - Pepper Sweet Cal Wonder Organic
-0
Heirloom
Organic
Pepper Seeds - Sweet - Cal Wonder (Organic)
Starting at $3.99
Tomato Seeds - Cherry - Large Red CherryTomato Seeds - Cherry - Large Red Cherry
-0
Heirloom
Tomato Seeds - Cherry - Large Red Cherry
Starting at $2.99
Spinach Seeds - Bloomsdale Long Standing (Organic)mid size pouch type seed packaging for - Spinach Bloomsdale Long Standing Organic
-0
Heirloom
Organic
Spinach Seeds - Bloomsdale Long Standing (Organic)
Starting at $3.59
Carrot Seeds - Danvers 126Carrot Seeds - Danvers 126
-0
Heirloom
Carrot Seeds - Danvers 126
Starting at $2.99
Tomato Seeds - Cherry - Supersweet 100 Hybridmid size pouch type seed packaging for - Tomato Cherry Supersweet 100 Hybrid
-0
Tomato Seeds - Cherry - Supersweet 100 Hybrid
Starting at $4.09
Onion Seeds - Bunching - Tokyo Long WhiteOnion Seeds - Bunching - Tokyo Long White
-0
Heirloom
Onion Seeds - Bunching - Tokyo Long White
Starting at $3.99
Asparagus Seeds - Mary Washingtonmid size pouch type seed packaging for - Asparagus Mary Washington
-0
Heirloom
Asparagus Seeds - Mary Washington
Starting at $2.99
Corn Seeds - Sweet - Golden Bantam 12mid size pouch type seed packaging for - Corn Sweet Golden Bantam 12
-0
Heirloom
Corn Seeds - Sweet - Golden Bantam 12
Starting at $3.39
Pepper Seeds - Sweet - Cal WonderPepper Seeds - Sweet - Cal Wonder
-0
Heirloom
Pepper Seeds - Sweet - Cal Wonder
Starting at $2.99
Okra Seeds - Clemson Spineless
Starting at $2.99
Onion Seeds - Long - Utah Yellow Sweet Spanish
Starting at $2.99
Brussels Sprouts Seeds - Long Island Improved
Starting at $2.99
Squash Seeds - Summer - Crookneck
Starting at $2.99
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