7 Vegetable Seeds to Direct Sow in May for an Abundant Summer Harvest

If you're debating what vegetable seeds to direct sow in May, you've landed on the right page. Direct sowing vegetable seeds this month can have many benefits, especially if you're keen on growing fresh vegetables throughout the summer.

"For a large portion of the country (especially the Midwest, Northeast, and much of the West), May is the absolute ‘sweet spot' for warm-season gardening," says Amy Enfield, Ph.D., senior horticulturist at Miracle-Gro. "The risk of a late spring frost has usually passed, and the soil has soaked up enough sunshine to become warm for planting."

That said, we chatted with gardening and horticulture experts to learn which vegetable seeds you should direct sow right now and why. We also asked them for best practices to keep in mind when direct-sowing each of these seeds, as well as how long you can generally expect your veggies to take to grow.

Read on for seven vegetable seeds to direct sow in May, so you can get ready to enjoy some vegetables throughout the summer, which officially starts in about a month if you can believe it!

1. Green Beans

Enfield notes that green beans can be an excellent vegetable to direct sow in May. "May provides the dry, warm environment they need to sprout out of the ground successfully," she explains. "Poke holes about an inch deep and drop a seed in every 2 to 3 inches." While it might be tempting to soak the seeds before planting, she advises planting them dry for the best growing, which generally takes up to 60 days, with 50 days serving as the sweet spot.

2. Sweet Corn

Corn seeds can be great to direct sow in May as frost has passed in many areas. "Frost will instantly kill a young corn stalk, and the seeds need soil temperatures of at least 60°F to germinate," she says. That said, you need to pay attention to how you direct sow these seeds, as the process might differ from other seeds you direct sow throughout the month.

Enfield and Barbara Arnold, senior horticulture designer at Franklin Park Conservatory and Botanical Gardens, recommend planting sweet corn seeds in a block as opposed to a row, in addition to regularly feeding them for optimal growth.

3. Lettuce

If you plan to make some summertime salads, John Faerber, director of horticulture of landscaping and floral at The Lake House on Canandaigua, tells us that May is the perfect time to direct-sow your lettuce seeds, especially romaine. "Cooler temperatures help lettuce develop crisp, healthy leaves without bolting too quickly," he explains.

While we know you can't control the weather, he notes that you should do your best to ensure the seeds and soil are receiving full sun more often than not. That said, you can expect these seeds to germinate within 10 days and reach maturity in about 70 days.

4. Beets

Faerber notes that May is the month to direct sow beet seeds, particularly those for cylindra beets. "Beets establish strong roots in cooler temperatures and produce sweeter flavor before summer heat arrives," says Faerber. Similarly to lettuce, beet seeds require full sun and can take up to 55 days to mature.

5. Cucumbers

You may not be surprised to learn that you should direct sow cucumbers in May, as they are a popular summer vegetable. "They need the consistent daytime warmth and milder nights that May brings to sprout and grow strong vines," says Enfield. Dr. Kimberly Moore, associate center director and professor of environmental horticulture at the University of Florida, IFAS, Fort Lauderdale Research and Education Center, notes that May is a good month, as the harsh summer conditions can sometimes make it hard for these plants to thrive.

You should direct sow cucumber seeds between ½ and 1 inch into the soil while ensuring they are regularly watered. As far as the timeline goes, Angelica Elliott, assistant director of public horticulture at the Desert Botanical Garden, says that your cucumber seeds will likely develop into cucumbers within 60 to 75 days.

6. Okra

Moore notes that you should direct sowokra seeds between ½ and 1 inch into the soil in May. "It actually grows better as temperatures climb, whereas many spring vegetables decline," she explains. With this in mind, she advises direct sowing them into an area where they will receive full sunlight and experience proper drainage to grow between 50 and 70 days into pods that you can pick from your vegetable garden.

7. Zucchini

Like okra, zucchini thrives in the heat, which is why Enfield recommends direct sowing their seeds in May in "hills" for the best results. She notes that it is important to make sure each of your seeds has enough room to grow in a warm area in well-drained soil. Zucchini also grows relatively quickly, taking between 45 and 60 days, so you can expect them in the middle of the summer season.

Related: 10 Vegetables You Can Grow in Part Shade

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This story was originally published May 24, 2026 at 5:20 AM.