US National Arboretum


Arboretum Plant Photo Gallery
Answer to the Front Page Picture of the Week Question
for May 7th - June 22nd, 2008

Picture of Glenn Dale azalea 'Youth'.  Click here for a larger image.
This is the Glenn Dale azalea hybrid 'Youth'.

The Glenn Dale evergreen hybrids were developed in (Glenn Dale) Maryland from Rhododendron indicum, R. kaempferi, R. simsii and many other species and hybrids. They are compact, spreading, evergreen azaleas developed primarily for cold hardiness along the mid-Atlantic states. Flowers are long-lasting and usually in showy trusses of 1 to 4 per cluster. Bloom time is late April to early May in warmer areas and as late as mid-June in cooler climates. This is usually a back of the border azalea because most of the Glenn Dales azaleas are taller (3-8 feet). Do not be alarmed if plant drops some leaves during colder weather. Filtered light is best. Plant as you would any of the other azalea: high and in well-drained, acid soil, rich with organic matter. The Glenn Dale azaleas are hardy in USDA hardiness zones 6 through 9. The hybrid 'Youth' and the other Glenn Dale azaleas can be found on the Glenn Dale Azalea Hillside in the Azalea Collection. Be sure to check the Azalea Blossom Watch page for the current projected peak bloom dates of all of our azaleas. You can also visit our Glenn Dale Azaleas Photo Gallery were you will find over 200 images of the flowers of more than 100 of the Glenn Dale azalea varieties.

[Click on the picture to see a larger image].
Be sure to go to the Picture of the Week Archive
or see the links below to view other plant images in our various Photo Galleries.

Go to:
Amaryllis (Hippeastrum) Photo Gallery
Award Winning Daylilies Photo Gallery
U.S. National Arboretum Crapemyrtle Introductions Photo Gallery
Glenn Dale Azaleas Photo Gallery
Fall Foliage Photo Gallery
Photo Gallery Introduction

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Last Updated   June 23, 2008 10:22 AM

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