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Publication #ENH-537

Magnolia denudata: Yulan Magnolia1

Edward F. Gilman and Dennis G. Watson2

Introduction

Also known as Magnolia heptapeta , this broad, spreading, deciduous tree has a relatively fast growth rate and eventually reaches 30 to 40 feet in height with an equal spread. The crown is open and forms a rounded outline several years after planting in full sun. The off-white, saucer-shaped, six-inch-diameter, fragrant blooms appear on the trees before the emergence of the seven-inch-long, dark green leaves. The blooms are followed by five-inch-long, brown fruits which ripen in early fall to reveal the bright red, inner seeds. Although there is no appreciable fall color change, the multi-stemmed, irregular form of Yulan Magnolia makes it quite striking in the winter garden after the leaves have fallen.

Figure 1. 

Middle-aged Magnolia denudata: Yulan Magnolia


Credit:

Ed Gilman


[Click thumbnail to enlarge.]

General Information

Scientific name: Magnolia denudata
Pronunciation: mag-NO-lee-uh den-yoo-DAY-tuh
Common name(s): Yulan Magnolia
Family: Magnoliaceae
USDA hardiness zones: 5B through 8A (Fig. 2)
Origin: not native to North America
Invasive potential: little invasive potential
Uses: deck or patio; container or planter; specimen; espalier; highway median
Availability: somewhat available, may have to go out of the region to find the tree

Figure 2. 

Range


[Click thumbnail to enlarge.]

Description

Height: 30 to 40 feet
Spread: 30 to 40 feet
Crown uniformity: irregular
Crown shape: round, spreading
Crown density: open
Growth rate: moderate
Texture: coarse

Foliage

Leaf arrangement: alternate (Fig. 3)
Leaf type: simple
Leaf margin: entire
Leaf shape: obovate, oblong
Leaf venation: brachidodrome, pinnate
Leaf type and persistence: deciduous
Leaf blade length: 4 to 8 inches
Leaf color: green
Fall color: no color change
Fall characteristic: not showy

Figure 3. 

Foliage


[Click thumbnail to enlarge.]

Flower

Flower color: white/cream/gray
Flower characteristics: very showy

Fruit

Fruit shape: elongated
Fruit length: 1 to 3 inches
Fruit covering: dry or hard
Fruit color: brown, red
Fruit characteristics: attracts birds; showy; fruit/leaves not a litter problem

Trunk and Branches

Trunk/bark/branches: branches droop; not showy; typically multi-trunked; thorns
Pruning requirement: needed for strong structure
Breakage: resistant
Current year twig color: green, brown
Current year twig thickness: medium
Wood specific gravity: unknown

Culture

Light requirement: full sun, partial sun or partial shade
Soil tolerances: sand; loam; clay; acidic; well-drained
Drought tolerance: moderate
Aerosol salt tolerance: unknown

Other

Roots: not a problem
Winter interest: yes
Outstanding tree: yes
Ozone sensitivity: tolerant
Verticillium wilt susceptibility: susceptible
Pest resistance: free of serious pests and diseases

Use and Management

This small tree is best used as a patio tree for shade and accent due to the low branching habit, attractive foliage and striking gray bark. It would look very nice lining an entrance walk to a commercial buiding or in a double or single row set back from an entrance roadway or long driveway. Grows well in urban areas but avoid poor, compacted soil. Nice for an urban garden.

Yulan Magnolia should be grown in full sun or partial shade on rich, moisture-retentive soil in an area protected from harsh, dry winds. Plants should not be exposed to overly wet or dry conditions.

Available cultivars include: `Japanese Clone', larger flowers; `Lacey', flowers up to eight inches across. Yulan Magnolia was used as a parent plant along with Magnolia acuminata to produce the hybrid `Elizabeth' which has a pyramidal shape and clear yellow, fragrant blooms.

Propagation is by seed sown immediately after ripening, since they will quickly lose their viability. Sometimes cuttings of these trees are grafted onto Magnolia x soulangiana

Pests and Diseases

No pests or diseases are of major concern but occasionally bothered by Magnolia scale as are many other Magnolias.

Footnotes

1.

This document is ENH-537, one of a series of the Environmental Horticulture, UF/IFAS Extension. Original publication date November 1993. Revised December 2006. Reviewed February 2014. Visit the EDIS website at http://edis.ifas.ufl.edu.

2.

Edward F. Gilman, professor, Environmental Horticulture Department; Dennis G. Watson, associate professor, Agricultural Engineering Department, UF/IFAS Extension, Gainesville FL 32611.


The Institute of Food and Agricultural Sciences (IFAS) is an Equal Opportunity Institution authorized to provide research, educational information and other services only to individuals and institutions that function with non-discrimination with respect to race, creed, color, religion, age, disability, sex, sexual orientation, marital status, national origin, political opinions or affiliations. For more information on obtaining other UF/IFAS Extension publications, contact your county's UF/IFAS Extension office.

U.S. Department of Agriculture, UF/IFAS Extension Service, University of Florida, IFAS, Florida A & M University Cooperative Extension Program, and Boards of County Commissioners Cooperating. Nick T. Place, dean for UF/IFAS Extension.