Japanese hydrangea vine is an excellent vine for wood or stone fences, walls, and arbors. Cinnamon-brown bark and large, white lace cap flowers in late June add to the beauty of this climbing vine. You can remove dead flowers, as soon as they become unattractive and clean up the overall shape of the plant. This plant … Best time to plant hydrangeas. The best time of day to plant … Fall is the best season to plant hydrangeas, followed by early spring. Hydrangea paniculata (Pee Gee or Panicle Hydrangeas) Prune this Hydrangea in late winter to keep the plants from becoming overgrown and encourage more new growth, more flower buds, and larger blooms. Mountain hydrangeas are the least common mophead (macrophylla). Noteworthy Characteristics. Schizophragma hydrangeoides, commonly called Japanese hydrangea vine, is a deciduous, woody-stemmed, climbing vine which is valued for its toothed, heart-shaped, deep green leaves (3-5" long) and large, flat-topped, lace cap hydrangea … Serrata. It attaches to hard surfaces by root-like holdfasts. These shrubs are native to Japan and are deciduous. Hydrangea serrata grow in zones 5 to 9. Hydrangea macrophylla ssp. The idea is to give the shrub plenty of time to establish a healthy root system before blooming. Mountain hydrangeas are typically smaller and more compact than other mophead hydrangeas…