Hydrangea serrata is similar to big leaf hydrangea (H. macrophylla) except it is a smaller more compact shrub with smaller lacecap flowers and dark green leaves.
Avoid pruning mountain hydrangeas, except to remove any dead wood. These hydrangeas cannot be cut back or trimmed at any time of the year without impacting the bloom for either the current season or the next. Prefers moist but well drained soils. Though they do rebloom readily on new wood, the best display comes from treating them as though they bloom on old wood.
Add aluminum sulfate to the soil to make the flowers bluer or add lime to the soil to make the flowers pinker. Begin soil treatments well in advance of flowering, as in late autumn or early spring.
‘Tuff Stuff’ has sturdy lacecap blooms that are bright pink or deep purple-blue depending on soil pH, with semi-double or double florets. Flower buds have great cold-tolerance which ensures good blooming.
Height: 2-3 ft.
Spread: 2-3 ft.
Bloom time: June to August
Sun: part shade
According to Rutgers University, hydrangeas are in the category “occasionally severely damaged by deer.”
photo credit: Proven Winners
a Proven Winners plant