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 ...

Red oak leaves from a tree infected with oak wilt. Infected trees have wilting and bronze to reddish-brown discolored leaves that may also look water-soaked.

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 ...

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 ...

MADISON (WLUK) -- Avoid pruning or cutting oak trees in Wisconsin until August. The recommendation comes from the state Department of Natural Resources, as this time of year brings a high risk for the ...

Fall is when trees are starting to slow down. Soon we will be raking leaves and dreaming about the pleasant weather just around the corner. While we are outside working around our landscape trees, ...

Many plants are poisonous to humans and animals alike, which is why it’s important to spot them before it’s too late. As more people venture outside to enjoy warm weather, knowing how to identify and ...

A: Not at all. There are people who feel the tannins (oils) in oak and pecan leaves inhibit growth of other plants enough that they shouldn’t be included in compost. That has never been a problem for ...