Shrub Audio Recording AvailablePurdue Plant Doctor Available Hydrangea quercifolia [Oakleaf Hydrangea] A unique plant with attractive flower panicles and large, coarse, handsome foliage. Tops (including flower buds formed in fall) can die back when winter temperatures go much below – 20 degrees F (often in Zone 6b and colder). Flowers form on previous season's growth. Thus, no flowers will appear in the years when the tops are killed. May be best used for foliage effect in cold areas. Not very drought tolerant. Spreads by stolons forming… Audio Recording AvailablePurdue Plant Doctor Available
Shrub Audio Recording AvailablePurdue Plant Doctor Available Hydrangea quercifolia 'Flemygea' [sold as Snow Queen™] [Snow Queen Oakleaf Hydrangea] A unique plant with attractive flower panicles and large, coarse handsome foliage. 'Flemygea' is known for its larger and more numerous showy, sterile flowers in each panicle. This cultivar also has stronger flower stems that can withstand a heavy rain better than many Hydrangea quercifolia variants. Tops (including flower buds formed in fall) can die back when winter temperatures go much below – 20 degrees F (often in Zone 6b and colder). Flowers form on… Audio Recording AvailablePurdue Plant Doctor Available
Shrub Purdue Plant Doctor Available Hydrangea quercifolia 'Snowflake' [Double Oakleaf Hydrangea] A unique plant with attractive flower panicles and large, coarse, handsome foliage. 'Snowflake' is a large cultivar (up to 8' high and 10' wide) that has large (up to 15" long) flower panicles of double sterile flowers. Tops (including flower buds formed in fall) can die back when winter temperatures go much below – 20 degrees F (often in Zone 6b and colder). Flowers form on previous season's growth. Thus, no flowers will appear in… Purdue Plant Doctor Available
Shrub Audio Recording AvailablePurdue Plant Doctor Available Hypericum calycinum [Creeping St. John's Wort] Relatively trouble-free. Tolerates dry conditions well (even drier shade). Generally, tops are killed back in severe winters near its limit of hardiness. Mowing to the ground each spring improves aesthetics of the following regrowth. Slow to leaf out in spring. Can be invasive via spreading stolons. Poisonous to animals. Audio Recording AvailablePurdue Plant Doctor Available
Indiana Native
![Hydrangea quercifolia 'Flemygea' [sold as Snow Queen™]](https://www.arboretum.purdue.edu/explorer/wp-content/uploads/sites/2/2023/01/NAME-21395-Summer-FloweringHabit-2-150x150.jpg)
