The Christmas and nursery tree industry in Pennsylvania is under increasing pressure due to an influx of invasive pests, but researchers from the Pennsylvania IPM Program are helping growers gain better control while reducing pesticide applications.
Read MoreThe tradition of Christmas trees in America came from German
immigrants who had settled in Pennsylvania. It is believed that the
tradition of Christmas trees started in Germany from as early as 700
A.D and was practiced by many Germans in the 1