Hydrangeas can vary widely in size depending on the species and variety. Generally, hydrangeas range from about 2 to 40 feet tall. Here are typical sizes for common hydrangea species:
- Climbing hydrangea (Hydrangea anomala): 30 to 40 feet tall, but only 5 to 6 feet wide as it climbs.
- Smooth hydrangea (Hydrangea arborescens): 3 to 5 feet tall and wide.
- Bigleaf hydrangea (Hydrangea macrophylla): 3 to 6 feet tall and wide.
- Panicle hydrangea (Hydrangea paniculata): 5 to 15 feet tall and 6 to 12 feet wide.
- Oakleaf hydrangea (Hydrangea quercifolia): 6 to 8 feet tall and wide.
- Mountain hydrangea (Hydrangea serrata): 2 to 4 feet tall and wide.
Most garden hydrangeas grow between 3 and 8 feet tall. Some varieties like the climbing hydrangea can grow very tall (up to 40 feet) but usually as a vine. Compact cultivars exist that stay on the smaller side (around 2 to 3 feet tall), suitable for containers or small gardens. The growth size also depends on factors such as sunlight, watering, soil conditions, pruning, and climate. Proper care can help hydrangeas reach their optimal size. In summary, for typical garden hydrangeas expect them to grow roughly between 3 to 8 feet tall, while specialized types like climbing hydrangeas can reach heights up to 40 feet.
