Infected leaves may distort, curl or turn yellow or purple and drop off. Japanese Beetle Holes appear on leaves and buds. Thrips Leaves, flower buds and flowers distort and may be flecked with yellow or brown streaks and spots. Shake infected flower over white paper. Tiny yellow or brown insects will be easily seen against white background.
Sprays are effective for most problems.
In areas where problems are great, preventive spraying may be necessary. There are many other pest problems that may affect roses. To This how-to is provided as a service of Lowe's Home Improvement Warehouse . Please read our terms of use . Please read it.