May sits inside zone 5's frost-free season (Apr 22 – Oct 12) — everything on this page can go straight into warm soil.
| 🥬 Brussels Sprouts | Apr 22 – May 6 | 90–110 days to maturity |
| 🥬 Celery | Apr 22 – May 6 | 100–120 days to maturity |
| 🍅 Tomatoes | Apr 29 – May 6 | 60–85 days to maturity |
| 🫑 Peppers | May 6 – May 13 | 60–90 days to maturity |
| 🍆 Eggplant | May 6 – May 13 | 65–80 days to maturity |
| 🍏 Tomatillos | Apr 29 – May 6 | 70–80 days to maturity |
| 🥒 Cucumbers | Apr 29 – May 6 | 50–70 days to maturity |
| 🥒 Zucchini | Apr 29 – May 6 | 45–60 days to maturity |
| 🎃 Winter Squash | Apr 29 – May 6 | 85–110 days to maturity |
| 🎃 Pumpkins | Apr 29 – May 6 | 90–110 days to maturity |
| 🍉 Watermelon | May 6 – May 13 | 75–95 days to maturity |
| 🍈 Cantaloupe | May 6 – May 13 | 75–90 days to maturity |
| 🌶️ Okra | May 13 – May 20 | 55–65 days to maturity |
| 🍠 Sweet Potatoes | May 6 – May 20 | 90–120 days to maturity |
| 🌿 Basil | Apr 29 – May 6 | 30–60 days to maturity |
| 🌿 Thyme | Apr 22 – May 6 | 90–120 days to maturity |
| 🌿 Oregano | Apr 22 – May 6 | 80–90 days to maturity |
| 🌸 Zinnias | Apr 29 – May 6 | 60–70 days to maturity |
| 🏵️ Marigolds | Apr 29 – May 6 | 50–60 days to maturity |
| 🥒 Cucumbers | Apr 29 – May 6 | 50–70 days to maturity |
| 🥒 Zucchini | Apr 29 – May 6 | 45–60 days to maturity |
| 🎃 Winter Squash | Apr 29 – May 6 | 85–110 days to maturity |
| 🎃 Pumpkins | Apr 29 – May 6 | 90–110 days to maturity |
| 🍉 Watermelon | May 6 – May 13 | 75–95 days to maturity |
| 🍈 Cantaloupe | May 6 – May 13 | 75–90 days to maturity |
| 🌽 Sweet Corn | Apr 29 – May 6 | 65–90 days to maturity |
| 🫘 Green Beans (Bush) | Apr 29 – May 6 | 50–60 days to maturity |
| 🫘 Pole Beans | Apr 29 – May 6 | 60–70 days to maturity |
| 🌶️ Okra | May 6 – May 20 | 55–65 days to maturity |
| 🌿 Basil | May 6 – May 13 | 30–60 days to maturity |
| 🌻 Sunflowers | Apr 29 – May 6 | 70–100 days to maturity |
| 🌸 Zinnias | Apr 29 – May 6 | 60–70 days to maturity |
| 🏵️ Marigolds | Apr 29 – May 6 | 50–60 days to maturity |
| 🌺 Nasturtiums | Apr 29 – May 6 | 55–65 days to maturity |
Windows use zone 5's typical frost dates (Apr 22 / Oct 12). For your own city's dates, run the frost lookup — the planting calendar then localizes everything automatically.
24 crops can go in the ground: brussels sprouts, celery, tomatoes, peppers, eggplant, tomatillos, cucumbers, zucchini, and 16 more. Exact windows are in the tables above — early and late in the month can differ by a full frost date.
Yes — May is tomato transplanting time in zone 5 (Apr 29 – May 6).