Why are Magnolia and Liriodendron important ornamental plants?

Within the Magnoliaceae family of the order Magnoliales, both Magnolia and Liriodendron are highly valued for their ornamental qualities.

Magnolia

The genus Magnolia is prized in horticulture for its large, fragrant, and showy flowers, which appear in various colors including white, yellow, pink, and purple. Many species, such as the southern magnolia (M. grandiflora), are considered among the most splendid ornamental trees due to their handsome, leathery leaves and striking, conelike fruits that reveal dangling seeds. Gardeners also favor numerous hybrids, such as the saucer magnolia, which is valued for its early spring blooms and tolerance to diverse soil conditions and atmospheric pollution.12

Liriodendron

The tulip tree (Liriodendron tulipifera) is a significant ornamental and shade tree, particularly where ample space is available for its large stature. It is distinguished by its unique, bilaterally lobed leaves and large, tuliplike flowers with greenish-yellow petals and orange bases. Beyond its aesthetic appeal, it is favored in landscaping for being relatively free of pests and diseases.3