Sassafras

Arbor Walk #30, TreeKeeper ID #1516

This Missouri native tree is capable of producing clones from its sprawling root system, allowing it to create genetically identical colonies. It has leaves that emit a spicy fragrance when crushed. An interesting feature of the Sassafras is its uniquely lobed leaves. The number of lobes on a leaf range from none up to three, when on most trees the number of lobes stay uniform throughout. Sassafras leaves had been used for centuries as a healing oil and as a flavoring agent, although recent work has found that the oil may have carcinogenic compounds. This has resulted in the banning of sassafras oil products across the US.

Common NameSassafras
Latin NameSassafras albidum
Indigenous Name(s) Miami: mankiišaahkwi; Quapaw: žą xówe hi
Cultivar/Variety 
Commercial Name 
Global Distribution
Where to find Arbor Walk #30 on WashU campus
Our Sassafras in space
GPS Coordinates

N/A

Percent Concrete

N/A

Distance to Buildings
YearClose Building #1Close Building #2Close Building #3
2020Women’s Building, 6.26 mWrighton Hall, 16.8 mLouderman Hall, 60.25 m
Distance to Other Species
YearClose Species #1Close Species # 2Close Species # 3
2020Pin Oak, 7.01 mSassafras, 7.45 mSassafras, 7.94 m
Our Sassafras through time
Standard Measurements
YearHeight (m)DBH (cm)Caliper (m)Crown Diameter N-S (m)Crown Diameter E-W (m)Average Crown Diameter (m)
20203.90864.6N/A2.042.132.085
20235.357N/A3.363.583.47
Nests and Pests
YearDescription
20201 bagworm
How to identify a Sassafras
Leaf Identification

Sassafras leaves can be highly variable in shape; they may be entire (no lobes), bi-lobed, or tri-lobed. In any case, they are dark green above and yellow-green below, with capillary veins that may be darker than the surrounding leaf. The margin is smooth. The leaves are alternately arranged on the stem and have a spicy fragrance when crushed.

Twig and Bud Identification

The twig is greenish-brown, with a textured feel and no visible lenticels (pores). The winter leaf buds are ovate, peach-colored, and multi-scaled. The flower buds are similarly colored, but slightly more oblong and much smaller.

Bark Identification

The bark of Sassafras has light gray-brown plated scales that reveal darker brown layers underneath. These plates create large furrows.

Fruit Identification

Since the Sassafras is dioecious, its fruit is only produced from female trees. The fruit is a drupe; it is dark blue in color and globular in shape. It is held on a bright red peduncle with a cupule at its tip. The fruits may be in small clusters, but often the individual stems of each fruit are elongated. The fruit ripen in summer.

Flower Identification

The flowers emerge from around the new leaf growth at the terminal bud. The flowers are in small racemes that form a larger dome of small green-yellow flowers. These flowers are six-petaled. Sassafras is dioecious, so male and female flowers are on separate trees. The flowers bloom in spring.

Relationship of Sassafras albidum to other species in the arboretum
Additional resources on the Sassafras

Take a look around Arbor Walk Tree #30