If so, you may want to take part in the OPAL Tree Health Survey:
Trees are vital – bringing nature into urban areas, supporting the rural economy, providing food and habitats for wildlife, and helping to combat climate change.
However, our trees are under threat. The number of pests and diseases attacking them has increased in the last few years.
The best time to do this survey is from May to late September.
Here’s some background on the nationwide OPAL project:
The Open Air Laboratories (OPAL) network is an exciting initiative that is open to anyone with an interest in nature.
We aim to create and inspire a new generation of nature-lovers by getting people to explore, study, enjoy and protect their local environment. In 2007 OPAL received a grant of £11.75 million from the Big Lottery Fund.
The benefits of OPAL have previously featured on this blog as University College London (UCL) have done fundamental work on illuminating the silt problem at the pond. They also participated in the large Biodiversity Day event held in 2010 and organised by Jim Storey.
See also here: Do You Know Your Trees?