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.
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![Legend: H for Heirloom, O for Organic, A for AAS Winner, F for staff favorites]()
Barley - Whole (Organic) - Grass Seeds
Barley grass sprouting seed, with the hull on (whole barley). Great germination rate and a great seed for sprouting, growing barleygrass and more. Grows healthy, thick bladed barley grass for...
Mini Pet Grass Kit
Give your cat or dog the treat of sweet green wheat grass that they crave! Giving them this nutritious green wheatgrass treat will not only make them happy but will...
Chia - Black (Organic) - Sprouting Seeds
10-15 Days to Harvest. Salvia hispanica. Organic Black Chia Sprouting Seeds. Organic. Non-GMO. Sprouting. High Germination. Great for chia pet refills, microgreens, sprouting, storage, vegan recipes, and more. Great source...
Starter Organic Wheatgrass Growing Kit
This Organic starter wheatgrass kit is the perfect introduction to growing your own wheatgrass at home for only pennies per day. The kit includes everything you need to grow up...
Yellow Mustard Microgreens Seeds
Yellow Mustard Microgreens Seeds. Non-GMO, Open Pollinated. Yellow Mustard Microgreens mature in 7 to 10 days, from seed to harvest. Grow as you would any other mustard seeds. Yellow mustard...
Sunflower - Red Storm - Microgreens Seeds
Red Storm sunflower microgreen seeds grow exotic red sunflower microgreens that boast all the same flavors and simplicity as traditional Black Oil sunflower sprouts. Try red microgreens sunflower shoots alongside...
Radish - Purple Plum - Microgreen Seeds
7-14 Days to maturity. Raphanus sativus. Purple Plum Radish Microgreen Seeds. This variety of radish microgreens is known for its distinctive purple and sometimes pinkish stems with bright green leaves....
Chia - White (Organic) - Sprouting Seeds
6-10 Days to Harvest. Salvia hispanica. Organic White Chia Sprouting Seeds. Organic. Non-GMO. Sprouting. High Germination. Great for chia pet refills, microgreens, sprouting, storage, vegan recipes, and more. Great source...
Barnwood Planter Organic Wheatgrass Kit
This wheatgrass starter kit is the perfect way to start growing your own wheatgrass at home for only pennies per day. The kit includes everything you need to grow up...
Hydroponic Wheatgrass Growing Kit
Grow wheatgrass hydroponically with the Hydroponic Wheatgrass Growing Kit. Less mess than soil. A complete and easy way to grow wheatgrass. Features the Micro-Mat hydroponic wheatgrass grow pads. Certified Organic....
Triticale (Organic) - Grass Seeds
Triticale seeds are an unexpectedly tasty sprout. It is very sweet after germination and wll surpise you how wll it goes on salads! Triticale grass seeds have a pleasant, very...
Mustard - Japanese Komatsuna - Microgreens Seeds
6-12 Days to maturity. Brassica rapa var. perviridis. Japanese Komatsuna Microgreen Seeds. As microgreens, Komatsuna retains much of the nutritional value and flavor profile of its mature counterpart but is...
Barnwood Planter Cat Grass Kit
Our Complete Barnwood Planter Catgrass Kit includes everything you need to grow healthy wheatgrass treats for your cat at home. These attractive and quaint rustic planter boxes are handcrafted in...
Amaranth Seeds - All Red Leaf - Microgreens Seeds
10 Days to Harvest. Amaranthus cruentus. All Red Leaf Amaranth Microgreens Seeds. Organic. Non-GMO. Microgreens. High Germination. Amaranth is a pseudo-grain that can be grown as sprouts or microgreens, ground...
Dog & Cat Pet Grass Kit
This pet / ornamental wheat grass kit is perfect for decorative growing or providing vital nutrients to your pets, and may also prevent them from eating your houseplants. Dogs &...
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