A hydrangea tree is a quick-growing upright shrub. Unlike more bushy hydrangeas, these plants provide later summer blooms when few other bushes are in bloom. They are popular landscape plants for massing or grouping in mixed shrub borders or woodland gardens. They also work well as specimen plants or in hedges.
Spring and fall are ideal times to plant hydrangeas. As long as they are planted in well-draining soil with plenty of organic matter, they should grow well.Avoid planting hydrangeas in summer when temperatures are mid 80s°F or higher unless you can keep them watered and will not let them dry out. Hydrangeas will grow best in full to partial shade. In hot climates, hydrangeas will do best with some shade.