Many coast live oak (Quercus agrifolia) trees are showing unusual browning in their canopies in the last month or two. If you look carefully, you may see small, crescent-shaped galls forming on the ...

Leaf spots appear in mid to late summer (July –August) as small circular to irregular tan, red-brown, to dark brown spots (Figure 1, 2) that expand to approximately the size of a dime overtime, but ...

Purdue Landscape Report: Each spring the PPDL receives several samples of oak trees showing curled, twisted, stunted and/or generally ratty looking leaves. When there are holes in the leaves or leaf ...

ORLANDO, Fla., Jan. 29 (UPI) --Scientists in Florida have confirmed what some citrus growers suspected for years -- that oak trees could inhibit citrus greening disease, which has brought the once ...

Yellowish or brownish tannins are bitter compounds found in plant tissues from seeds to bark. The rivers pick up colors much ...

While, to many, fall is as good a season as any other, it can be the worst for those who are prone to oak leaf itch mites. These are commonly known to feed on larvae of an oak gall midge (fly) that ...

Oak leaf itch mites, tiny pests that feed on cicada eggs and oak midge fly larvae, can cause itchy rashes in humans. Symptoms of oak leaf itch mite bites include intense itching, rashes, and ...