What You Need to Know About the Japanese Beetle

Rocky Mountain Gardening Elective

Over the past decade Japanese beetle has emerged as serious new pest in many parts of Colorado and is steadily extending its range within the state. Adults chew on the leaves and flowers of a very wide variety of landscape plants commonly grown in the region and the grub-stage young can be serious pests of turfgrass. Better understanding the habits of this insect is fundamental to best managing it. Several methods can be used, including cultural controls, biological controls and selective chemical controls and the most appropriate ways to use these will be discussed.

Price: $36, $30 member

Instructor: Dr. Whitney Cranshaw

Dr. Whitney Cranshaw is an Emeritus Professor of Entomology at Colorado State University where he has worked since 1983. During this time he has conducted a wide-ranging Extension/Research/Teaching program with the primary focus of improving the understanding of and effective management of insects of horticultural crops (vegetables/fruits, flowers, trees/shrubs, turfgrass, hemp). He has written extensively on these subjects, producing many hundreds of publications on research and for public education/Extension. He has also authored several books, perhaps best-known being Garden Insects of North America and Bugs Rule! An Introduction to the World of Insects. His work has been recognized by numerous awards associated with various "green industries" and professional associations, within the state and nationally. Although retired from CSU in July 2020, he has not retired from "bugs" and continues to write, speak with diverse audiences, support websites and listserv discussion groups, and conduct research on projects of interest.