What to Plant in May USA

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What to plant in May in the USA depends entirely on your zone — this page answers it for every band. May is the main planting-out month across most of the USA. Transplant tomatoes, peppers and eggplant after your last frost, direct sow beans, corn and squash once soil reaches 60-70F, and keep succession sowing salad.

SoilCommander Editorial Team

USA vegetable growing guides · Checked against USDA and Cooperative Extension guidance

Every USA growing guide is written and maintained by our editorial team for real US growing conditions, and checked against USDA hardiness and frost-date data and Cooperative Extension growing advice before publication.

60F

Soil minimum: beans and tomatoes

70F

Soil minimum: squash, corn, melons

May-Jun

Cold band: last frost passes

May planting by region

Band	Sow outdoors	Start indoors	Plant out	Harvest now
Cold band USDA zones 3-5	Beans, corn, squash and cucumbers late month once soil hits 60-70F.	Fall brassicas late month.	Tomatoes, peppers and eggplant after the last frost.	Asparagus, radish, spinach, lettuce, rhubarb.
Mild band USDA zones 6-7	Cucurbits, beans, corn; succession lettuce and beets.	Fall brassicas late month.	Sweet potato slips; remaining warm-season transplants.	Peas, lettuce, spinach, radish, early carrots, strawberries.
Hot band USDA zones 8-10	Okra, southern peas, melons, sweet potatoes, heat-tolerant beans.	Nothing — focus on irrigation.	Sweet potato slips.	Last spring crops; shift entirely to heat-tolerant crops.

May garden jobs

Check soil temperature before sowing beans, corn and cucurbits.
Water new transplants daily until established.
Thin direct-sown rows — crowded roots never size up.
Install stakes and cages now, before plants are large enough to damage.
Start scouting for pests weekly rather than reacting to damage.

Common May mistakes

Sowing squash and corn into 55F soil, where seed rots instead of germinating.
Planting the whole bean crop at once instead of succession sowing.
Leaving tomato cages until the plants are already sprawling.
Watering shallowly and often, which trains roots to stay near the surface.

Turn May's jobs into a written plan. The USA Vegetable Garden Planner (printable PDF) has frost-date planning pages, bed layouts, crop rotation, a sowing log and a harvest tracker — 74 printable pages.

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Frequently Asked Questions

What soil temperature do beans need?

At least 60F. Below that, bean seed rots in the ground rather than germinating, which is the single most common May failure.

Can I still start seeds in May?

Yes — direct sow beans, corn, squash and cucumbers, and start fall brassicas indoors late in the month for a fall crop.

How often should I water new transplants?

Daily for the first week or two, then deeply and less often to encourage deep rooting.

Last updated 25 August 2026

Relevant next steps

Turn This Month's Jobs Into A Plan

Month-by-month advice works best when it becomes a written sowing list, bed plan, and follow-up task list.

Printable garden plannerRecord this month's sowing dates, crop rotation, and bed tasks. Seed starting setupChoose trays, labels, compost, and indoor sowing tools before you start. Full planting calendarCompare this month with the rest of the UK growing year.

Plan the next step

Use the printable SoilCommander planner for your region to turn this guide into sowing dates, bed layouts and weekly garden tasks.

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What to Plant in May USA