University of FloridaSolutions for Your Life

Download PDF
Publication #HS667

Skirret—Sium sisarum L.1

James M. Stephens2

Skirret is derived from the Dutch suikerwortel, meaning "sugar root." It is also known as skirwort. It is a vegetable grown for its sweet, edible roots. This member of the carrot and parsley family (Umbelliferae) originated in Asia. It is still used widely in China and Japan, but is a very minor crop in the United States.

Figure 1. 



Topjabot, CC BY-SA 3.0

[Click thumbnail to enlarge.]


The plant grows 3–4 feet high and has large, shining, dark green, compound, pinnate leaves. Small, white flowers are produced in umbels. The grayish-white roots grow in clusters from the stem base like sweet potatoes and are 6–8 inches long, cylindrical, and somewhat jointed. They have a sweet taste if well grown, but have a tough, woody nonedible core.


Plants are usually grown from seeds, which are similar to carrot seed in appearance. Seeds may be planted in seedbeds for transplants or sown directly in the garden. The plants may also be started from root divisions.

Here in Florida, skirret should be sown or planted in the fall, since it is a hardy, cool season crop. It usually requires 6–8 months from seeding to harvest. Space rows 12–18 inches apart, and space plants 6 inches apart within the row. Sow seed ½ inch deep, or set roots 2 inches deep.


Skirret may be boiled, stewed, or roasted. The fibrous central core must be removed before cooking, although seedlings differ in the amount of core. The core is difficult to remove after cooking. The root texture is firm, the taste is sweet, and the color is very white.



This document is HS667, one of a series of the Horticultural Sciences Department, UF/IFAS Extension. Original publication date May 1994. Revised September 2015. Visit the EDIS website at


James M. Stephens, professor emeritus, Horticultural Sciences 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.