ID

3104-1545

Authors as Published

Alexandra Spring and Eric Day, Department of Entomology, Virginia Tech

Figure 1 Celery Leaftier
Figure 1. Celery Leaf Tier life stages

Description

Pale green turning yellow when grown, with a dark green stripe bordered by white stripes down the back. Up to 3/4 inch long.

Common Host Plant(s)

Celery.

Damage

Eats holes in leaves and stalks. Rolls and folds leaves, ties them together with webs.

Distribution

Throughout United States.

Thresholds

At five different locations in planting inspect 20 plants for larvae on a weekly basis. If more than 4 weeks before harvest and there are 2 or more larvae per 100 plants, treatment is warranted.

Cultural Control

Harvest early and plow under all crop refuse afterward.

Organic/Biological Control

For celery, make two applications of pyrethrum dust 1 hour apart. The first application should drive tiers from their webs and the second should kill them.

Chemical Control

No known chemical control for celery leaftier.

FIgure 2 celery
Figure 2. Celery leaf tier, left, and damage, right. Michigan State University

References

Foster, Rick and Brian Flood. 1995. Vegetable Insect Management, Meister Publishing Company, Willoughby, Ohio. p. 128.


Virginia Cooperative Extension materials are available for public use, reprint, or citation without further permission, provided the use includes credit to the author and to Virginia Cooperative Extension, Virginia Tech, and Virginia State University.

Issued in furtherance of Cooperative Extension work, Virginia Polytechnic Institute and State University, Virginia State University, and the U.S. Department of Agriculture cooperating. Edwin J. Jones, Director, Virginia Cooperative Extension, Virginia Tech, Blacksburg; M. Ray McKinnie, Administrator, 1890 Extension Program, Virginia State University, Petersburg.

Publication Date

April 25, 2011

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