Rhododendron maximum

Great Rhododendron

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Common Name: 

Great Rhododendron

Plant Type: 

Foliage color: 

Green

Sun (From 0 to 5): 

Water (From 0 to 5): 

Maximum temperature: 

30°C

Minimum temperature: 

10°C

Maximum height: 

610 cm

Maximum width: 

610 cm

Great Rhododendron (Rhododendron maximum) - Description

This Rhododendron is defined by its large leathery 8" leaves that last for up to 8 years on these massive evergreen shrubs. Native to North East United States this rhododendron loves the shade and will spread indefinitely to make large shrubby bushes. In early spring it will explode with large pink , white, or purplish flowers, that are spotted with orange / green marks.

Great Rhododendron (Rhododendron maximum) - Blooming

Blooms in early Spring. There are many varieties of Rhododendrons and Azaleas that come in many different colors and styles.

Great Rhododendron (Rhododendron maximum) - Growth

Rhododendrons do best with filtered sunlight. Generally, these plants will need more protection from the sun as the climate gets sunnier and hotter. They do best in cooler, temperate climates that have sufficient rainfall.

Great Rhododendron (Rhododendron maximum) - Planting

Sow seeds in soil that is acidic as soon as the seeds are ripe or in early spring. Maintain the temperature between 55 and 65°F (18°C). It should be noted that Rhododendrons readily hybridize and seeds collected from your garden may produce offspring that do not closely resemble the parents.

Great Rhododendron (Rhododendron maximum) - Pest

Prone to whitefly, lace bugs, scale, caterpillars and aphids. Susceptible to powdery mildew, leafy gall and root rot.

Great Rhododendron (Rhododendron maximum) - Interesting facts

The name Rhododendron literally translates to "rose tree". The species R. catawbiense is found throughout the Appalachian Mountains. Not only is it the state flower of West Virginia, it is also on the state flag.

Great Rhododendron (Rhododendron maximum) - Soil and irrigation

Need fast-draining soils that are rich and acidic. Does best if the soil also retains sufficient quantities of water (amend soil with organic matter to do so). These plants need more air in the root zone than most plants do. Plants that are yellowing and that have leaves that are dropping are most likely sitting in water and the roots are drowning.

Rhododendron maximum - Great Rhododendron - Photos