Roses are popular ornamental plants grown in home gardens, parks, and other landscapes. Just like other plants, roses can be host to a number of insects and mite pests.
Roses can grow well with little to no pesticide use and numerous natural enemies, or “good bugs” exist to help hunt or parasitize common rose insect pests.
Find solutions for common invertebrate pests on roses in UC IPM's recently updated Pest Notes: Roses: Insects and Mites. This revised publication by rose experts Mary Louise Flint, Extension Entomologist Emerita, and John Karlik, UC Cooperative Extension Advisor, Kern County will help...
This time of year, you may notice a white, powdery looking growth on fruit, vegetable plants or ornamental plants in your garden. What is it? It could be powdery mildew.
Powdery mildew is caused by several different fungi that may attack plant leaf surfaces, shoots, fruits, and flowers. There are several species of powdery mildew; all are spread by wind and thrive in shady areas when temperatures are between 60-80 °F. The fungi attack both new and old foliage, and can be a problem on certain plants. The disease usually occurs first on new leaves, before spreading to older parts of the plant. This is why over fertilizing worsens powdery mildew.
Many woody and herbaceous...