What to plant in Virginia in May
May in Virginia marks the transition to full warm-season gardening as average temperatures reach 18.9°C and frost risk diminishes. With June and July forecasts showing significant warming (t_max 30-31.9°C), this is the critical window for establishing heat-loving crops while soil moisture remains relatively high from spring rains.
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Sowing
Recommended sowing
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Sweet Corn
Direct sow outdoors once soil is consistently above 15°C; plant in blocks for pollination.
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Bush Beans
Direct sow every two weeks for a staggered harvest throughout the summer.
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Zucchini
Direct sow in hills or mounds; ensure good spacing for airflow.
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Cucumber
Direct sow or start in biodegradable pots to avoid root disturbance.
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Okra
Soak seeds for 24 hours before sowing to improve germination rates.
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Sunflowers
Direct sow; very hardy against late spring temperature fluctuations.
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Watermelon
Direct sow in warm soil; requires significant space for vine spread.
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Basil
Direct sow or transplant; sensitive to any remaining cold snaps.
Seedlings
Seedlings
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Tomato
Transplant deep into the soil to encourage adventitious root growth.
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Bell Pepper
Transplant only when night temperatures are reliably above 12°C.
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Eggplant
Use row covers if flea beetles are present in early May.
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Sweet Potato
Plant slips in ridges to ensure good drainage during June rains.
Tasks
Monthly tasks
Apply organic mulch (straw or shredded leaves) to conserve May's 97.8mm of rainfall for the drier June ahead. Monitor for pests like Colorado Potato Beetle and Squash Bugs as activity increases with the t_avg rising to 18.9°C. Support tall plants like tomatoes and peppers early to prevent storm damage.