Possible New Invasive Plant Regulations in Pennsylvania

Jill Calabro, Ph.D. March 20 2019

Pennsylvania may soon regulate as many as 120 plants over concerns of invasiveness. Many of these plants are common in environmental horticulture, while others have little if any commercial significance.

The Pennsylvania Landscape and Nursery Association (PLNA) asked its members via a survey to rate the 120 plants on their value to the industry. A reported forty-three members completed the survey; the results are available for...