See All Christmas Trees

Weekly scouting report compiled by Kelly Piccioni, Penn State Extension, Schuylkill County. This week's scouting data contributors: Kelly Piccioni, Penn State Extension, Don deMackiewicz, Sarah Pickel, and Cathy Thomas (PDA), Jim Fogarty

Many things make plants unwell and pests and diseases are only two causes of poor plant growth.

The European pine sawfly is common in Pennsylvania. The larval stage feeds on the needles of pine trees in landscapes, nurseries, and Christmas tree plantations.

Weekly scouting report compiled by Kelly Piccioni, Penn State Extension, Schuylkill County. This week's scouting data contributors: Kelly Piccioni, Penn State Extension, Don deMackiewicz, Sarah Pickel and Cathy Thomas (PDA), Jim Fogarty

The European pine shoot moth is a key pest of ornamental pine plantings, pines in production nurseries, and Christmas trees in Pennsylvania.

The pine needle scale is a key native pest of pine, Douglas-fir, spruce, and cedar in landscapes, nurseries, and Christmas tree plantations in Pennsylvania.

The snailcase bagworm is a moth (family Psychidae) that was accidentally introduced into the United States from Europe in the 1940s.

The eastern spruce gall adelgid is a key pest of Norway spruce, Picea abies, in northeastern United States.

The white pine weevil is considered the most destructive insect pest of eastern white pine in North America.

The spruce spider mite attacks spruce, arborvitae, juniper, hemlock, pine, Douglas-fir, and occasionally other conifers.

Weekly scouting report compiled by Kelly Piccioni, Penn State Extension, Schuylkill County. This week's scouting data contributors: Kelly Piccioni, Penn State Extension, Don deMackiewicz, Sarah Pickel, and Cathy Thomas (PDA), Jim Fogarty

Weekly scouting report compiled by Kelly Piccioni, Penn State Extension, Schuylkill County. This week's scouting data contributors: Kelly Piccioni, Penn State Extension, Don deMackiewicz, Sarah Pickel, and Cathy Thomas (PDA), Jim Fogarty

Participants in this one-day pesticide update receive research-based information and recertification credits in hard-to-find categories.

Weekly scouting report compiled by Kelly Piccioni, Penn State Extension, Schuylkill County. This week's scouting data contributors: Kelly Piccioni, Penn State Extension, Don deMackiewicz, Sarah Pickel, and Cathy Thomas (PDA), Jim Fogarty

Weekly scouting report compiled by Kelly Piccioni, Penn State Extension, Schuylkill County. This week's scouting data contributors: Kelly Piccioni, Penn State Extension, Don deMackiewicz, Sarah Pickel, and Cathy Thomas (PDA), Jim Fogarty

Weekly scouting report compiled by Kelly Piccioni, Penn State Extension, Schuylkill County. This week's scouting data contributors: Kelly Piccioni, Penn State Extension, Don deMackiewicz, Sarah Pickel, and Cathy Thomas (PDA), Jim Fogarty

Weekly scouting report compiled by Kelly Piccioni, Penn State Extension, Schuylkill County. This week's scouting data contributors: Kelly Piccioni, Penn State Extension, Don deMackiewicz, Sarah Pickel, and Cathy Thomas (PDA), Jim Fogarty

The most common host plants of Cooley spruce gall adelgid are Colorado blue spruce and Douglas-fir that are grown as landscape ornamentals and Christmas trees.

Weekly scouting report compiled by Kelly Piccioni, Penn State Extension, Schuylkill County. This week's scouting data contributors: Kelly Piccioni, Penn State Extension, Don deMackiewicz, Sarah Pickel and Cathy Thomas (PDA), Jim Fogarty

Weekly scouting report compiled by Kelly Piccioni, Penn State Extension, Schuylkill County. This week's scouting data contributors: Kelly Piccioni, Penn State Extension, Don deMackiewicz, Sarah Pickel and Cathy Thomas (PDA), Jim Fogarty

This week's contributors: Kelly Piccioni, Penn State Extension; Don deMackiewicz, Pennsylvania Department of Agriculture, Penn State Extension, Jim Fogarty, Halabura Tree Farms;

This week's contributors: Kelly Piccioni, Penn State Extension; Don deMackiewicz, Pennsylvania Department of Agriculture, Penn State Extension, Jim Fogarty, Halabura Tree Farms;

Weekly scouting report compiled by Kelly Piccioni, Penn State Extension, Schuylkill County. This week's scouting data contributors: Kelly Piccioni, Penn State Extension; Don deMackiewicz, Pennsylvania Department of Agriculture, Penn State Extension

Weekly scouting report compiled by Kelly Piccioni, Penn State Extension, Schuylkill County. This week's scouting data contributors: Kelly Piccioni, Penn State Extension; Don deMackiewicz, Pennsylvania Department of Agriculture, Penn State Extension

Weekly scouting report compiled by Kelly Piccioni, Penn State Extension, Schuylkill County. This week's scouting data contributors: Kelly Piccioni, Penn State Extension; Don deMackiewicz, Pennsylvania Department of Agriculture, Penn State Extension