We are in USDA hardiness zone 7.
Continual planting will help insure a long harvest from your garden. After your spring vegetables and strawberries are harvested you can now use that space to plant more summer vegetables.
Crowder peas, pumpkins, sweet potatoes, October beans and butternut squash do well when planted in June. This month is also a good time to plant second plantings of tomatoes, cucumbers, green beans and squash.