US National Arboretum


Arboretum Plant Photo Gallery
Answer to the Front Page Picture of the Week Question
for May 29th - June 25th, 2007

Picture of Magnolia macrophylla flower (upper) and leaves (lower).  Click here for a larger image.
This is Bigleaf magnolia, Magnolia macrophylla.

Magnolia macrophylla is one of eight species of Magnolia native to the United States and is listed as “Endangered” in Arkansas and Ohio. Bigleaf Magnolia grows slowly to 30 to 40 feet and spreads 20 to 25 feet forming a rounded, broad canopy. Bigleaf magnolia truly has tremendous leaves, usually 20-30 inches but some up to 45 inches long, with wavy edges and "ear-lobes" at the base. It also has the largest flower of any plant species native to the U.S. The ivory-colored showy flowers are 8 to 12 inches wide with a slight rose tint at its base. These blooms are followed by the production of 2.5 to 3-inch-long, hairy, red, egg-shaped fruits. Bigleaf Magnolia trees must be 12 to 15-years-of-age, however, before they begin to bloom. It is hardy in USDA Hardiness Zones 5b through 8.   Magnolia macrophylla can be found in the
Fern Valley Native Plant Collection at the National Arboretum. [Check out our 'Native Magnolias of Spring' article to learn more about all eight native U.S. Magnolia species].

[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

 Back to the Arboretum Home Page
Arboretum Information || Events & Education || Gardens & Horticulture || Research Activities
Support the Arboretum || New Plant Introductions || USDA Plant Hardiness Zone Map || Comments
Search Our Site

Last Updated   June 26, 2007 4:18 PM

Please address any comments or questions regarding any portion of this web page by e-mail to the FNPRU site administrator