Reports of Oak decline are said to date back to the 1920′s so it is no new disease. However recently in the news has been reports of it spreading more rapidly and killing off whole oak groves. The disease is said to be welling up again more rapidly due to the increase in temperature in this country due to global warming.
The symptoms of the disease “oak decline” starts off by showing the yellowing of leaves during spring and summer. The oak dies from the top branches downwards inevitably killing the whole tree in the end. The branches towards the top of the oak resemble a stags horns being bare at all times of the year.
Cankers on the trunk will then bleed a black pus-like liquid from the trunk. Oak decline stunts the trees ability to defend itself against other insects, fungi and diseases.
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