What is the tallest variety of rhododendron?

rosebay rhododendron
On show beginning in mid-June: rhododendron maximum or rosebay rhododendron. This is the tallest and showiest of the three rhododendron species native to our Blue Ridge Province. With large clusters of blooms and dark green leaves up to 10 inches long, it sometimes grows to a height of 25 feet.

How high can rhododendron grow?

They usually grow from 3 to 8 feet tall and wide. For this story, rhododendrons refers to those plants with large, evergreen leaves up to 6 inches long.

How much space do rhododendrons need?

2 to 6 feet apart
Space plants 2 to 6 feet apart, depending on their estimated mature size. Dig a hole as deep as the root ball and 2 times as wide. Set new plants so that their top roots are at soil level or slightly below. If you plant them any deeper, the roots may rot.

Can you plant 2 rhododendrons together?

Planting rhododendrons close together creates a mass planting, hedge or screen with bright spring colors. The best time to plant rhododendrons is in the fall so that the roots have enough time to become established before new spring growth.

What is the largest growing rhododendron?

Many rhododendron plants grow from 3 to 4 feet in 10 years, but some can grow up to 7 feet in 10 years. Some of the fastest growing rhododendrons are the Brittenhill Bugle, R. genestierianum, Ilam Cream, Mother of Pearl, Professor Hugo de Vries, Spicy Nutmeg, and the Whidbey Island.

How tall and wide do rhododendrons grow?

Quick Reference Growing Guide

Plant Type: Woody flowering shrub Flower/Foliage Color:
Height: Up to 30 feet Avoid Planting With:
Spread: Up to 40 feet Uses:
Growth Rate: Moderate Family:
Time to Maturity: 10 years Genus:

How far away from house should I plant rhododendron?

Medium shrubs like Rhododendrons, Azaleas, Spirea, Holly and Boxwood go 2.5-3′ from the side of the house.

Are rhododendrons fast growing?

Some Rhododendrons will experience a fast growth rate (2 ft. per or 60 cm) while others will slowly grow less than 0.5 in. per year (1cm). If you choose plants that are the right size to begin with, they are relatively maintenance free.

What should I plant in front of a rhododendron?

Among the most popular companion plants for Rhododendrons and Azaleas are Kalmia latifolia (Mountain Laurel) and Pieris japonica (Japanese andromeda). Both species are medium-size evergreen shrubs with great flower interest and they provide a textural contrast to Azaleas and Rhododendrons.

How far away from a house should you plant a rhododendron?

2.5-3′
Medium shrubs like Rhododendrons, Azaleas, Spirea, Holly and Boxwood go 2.5-3′ from the side of the house. I can easily walk behind the shrubs after planting.

How do I make my rhododendron taller?

PRUNING RHODODENDRONS BY PINCHING BACK NEW GROWTH The final thing you want to do is to pinch or snap off the new growth back when it’s a couple of inches long. This is the key step to developing the dense bushy plant that you are after. These plants often send out a single long new shoots with no branching.