Bush Rose Leaves Have Large Areas Where Leaves Look Wet And Sticky

Question From: L. Pecorino - San Diego, California, United States
Q: Some of my bushes look like something "urinated" on the leaves. Large areas of the foliage looks wet and sticky. I tried washing it off with the water hose. I haven't gone out to see if the water dried and the mystery liquid is gone or still there. Thanks

A: The liquid is probably honeydew produced by aphids or certain types of scale. Look on the undersides of the leaves. Scale is usually found on branches and stems along with leaves. Take sample of the plants to your local independent garden center for an accurate Id of the plants and the insect to find the best control product. Best And Happy Yardening, Nancy