How Large Can Hydrangeas Grow?

Hydrangeas are a popular and easy-to-grow ornamental garden or container plant, with large, mostly spherical flower heads in a wide array of colors. They can grow between 3 and 12 feet (1 – 3.6 m) tall. The Climbing Hydrangea (Hydrangea petiolaris) is the tallest hydrangea, with growth up to 50 feet (15 m) due to its long trailing vines. The most popular type, Bigleaf Hydrangeas, can grow to an impressive 10 feet in height and spread with the right care, but most remain more compact.

Hydrangeas are known for their beautiful flowers, which come in a variety of colors and add color and interest to your garden. They can get as tall as 20 feet and as wide as 15 feet, so place your plant where it will have room to spread out. Learn how to propagate hydrangeas, as they can grow up to 20 feet and as wide as 15 feet.

Hydrangea paniculata has varieties that can reach up to 15 feet, while most max out around 8 feet tall. Panicles are great when used, and most reach around 4 to 5 feet in height and spread. Some hydrangeas are the perfect size for a small garden, while others make large shrubs for big borders. H. macrophylla, also known as bigleaf, mophead, or lacecap hydrangea, grows 6 to 10 feet tall and wide.

Larger varieties of hydrangeas can reach up to 15 feet tall, producing white flowers on the current year’s growth. Pruning is minimal in late winter/early spring, and they can fill in a space in just one summer. Hydrangeas grow in hardiness Zones 3 and 4.