Hydrangea trees are moderate growers; will grow 6-8 ft tall 7 ft wide and can live to be 40 years old. The only hydrangea that can be trained into a tree safely is H. paniculata the other varieties of hydrangea are too heavy and will snap easily. These hydrangeas are perfect for shady gardens and can even handle some sun with the right amount of water! It is not care what kind of soil type or pH and is very tolerant of urban pollution. Flowers appear in early summer on panicles above dark green foliage. Flowers are usually white that fade out into pink or blush pink. With its upright, vase shape growth habit it makes a great patio tree!