Hydrangeas vary widely in size depending on the species and cultivar. Here is a summary of typical mature sizes for common types of hydrangeas:
- Bigleaf Hydrangea (Hydrangea macrophylla): Usually grows 3 to 6 feet tall and wide, with some cultivars like 'Big Daddy' reaching 5 to 6 feet tall and wide
- Panicle Hydrangea (Hydrangea paniculata): Can grow quite large, typically 5 to 15 feet tall and 6 to 12 feet wide, with some varieties reaching up to 20 or even 25 feet tall if unpruned
- Oakleaf Hydrangea (Hydrangea quercifolia): Generally grows 6 to 8 feet tall and wide, with some compact cultivars around 3 to 5 feet tall and wide
- Smooth Hydrangea (Hydrangea arborescens): Usually reaches 3 to 5 feet tall and wide
- Mountain Hydrangea (Hydrangea serrata): Smaller, around 2 to 4 feet tall and wide
- Climbing Hydrangea (Hydrangea anomala): The largest type, it can climb and grow 30 to 40 feet tall, but only 5 to 6 feet wide
In summary, hydrangeas can range from compact shrubs about 2 to 3 feet tall and wide to large shrubs or climbers reaching up to 40 feet tall. Most garden varieties fall between 3 and 8 feet tall and wide, making them versatile for small to large garden spaces