When the soil is above a pH of 7.5, it's is difficult for the pin oak tree roots to extract the iron. There may be plenty of iron in the soil, and other plants will not show any yellowing, but the ...

Pin oak trees often appear to have poor leaf color and suffer from leaf chlorosis or yellowing. Depending on the severity of the problem, trees typically range from bright green ...

The next potential threat facing Niagara County’s trees could make the jump from across the border. Trees in Canada’s Niagara Region have been infected with oak wilt, a fungal disease that means ...

It's not well understood why mast years happen with them occurring at irregular intervals from 2-5 years for oak trees, to 4-7 years for maple trees, and 3-8 years for pine trees.

Tenterfield is famous for its vibrant oak trees, ... Visitors to Tenterfield's Autumn Festival love the pin oak trees. ... Some of the trees are nearing 100 to 150 years old.