Damage from sycamore plant bug on the left, and sycamore scale on the right.
Landscape
Sycamore plant bugs mature to adults by approximately early July.
Sycamore plant bug nymph with developing wing pads.
Old sycamore anthracnose damage and healthy foliage emerging.
San Jose scale is an armored scale that sucks sap from bark. Currently toward the end of peak crawler stage.
Larvae of European pine shoot moth tunnel into shoots of 2- and 3-needled pines.
The larva of a sequoia pitch moth exposed from within a pitch mass.
Sequoia pitch moth has become a troublesome pest of pines along the Wasatch Front.
Caterpillar of painted lady butterfly feeding on yarrow. This native insect is experiencing a very high population in the Intermountain West in 2019.
European fruit lecanium scale has a very wide host range, but is recognized by the bulbous bodies of females with eggs. Peak crawler activity is happening now.
Grasshopper nymphs are hatching now in large numbers.
European elm scale. Peak crawler activity is to begin June 29 – July 3.
The bodies of spruce bud scale resemble a bud and are difficult to see. Look for black sooty mold on the bark as one confirmation of the scale's presence. Peak...
Black pineleaf scale is an armored scale that mostly occurs on trees stressed by drought, nutrient deficiency, or other cause. Crawler activity begins June 30...
Often the cause of dieback in birch is bronze birch borer.