In the steamy greenness of the midsummerlandscape, white flowers can add a coolingtouch, sort of a visual equivalent to a scoopof vanilla ice cream. Several hydrangeas havejust such a refreshing floral display, includingoakleaf hydrangea (Hydrangea quercifolia) andits cultivars. This species is native to the southeasternUnited States, growing from North Carolinato northern Florida and west to Tennesseeand Louisiana, but it also grows well in otherregions. It is recommended for USDA HardinessZones 6 to 9 (average annual minimumtemperature -10 to 0°F [23.3 to 17.8°C]) and mayalso survive in Zone 5 (average annual minimumtemperature -20 to -10°F [28.9 to 23.3°C]).
展开▼
