I must admit,it is an exciting time of the year when we see all the buds forming and wait to see the lovely leaves and flowers that follow. Having said that, we have a Beech tree that overhangs our garden from the neighbouring infant school. It is a handsome specimen, but this year it is infected by a white aphid on the underside of the leaves. They secrete a horrible sticky substance which drops onto the plants and slabs below making a terrible mess. I believe this secretion can cause black mould on leaves and may damage the plants. In the past I have moved potted plants but some are now too big to manhandle so I'm hoping for plenty of rain which may wash away some of the residue left by these pests. Has anybody out there experienced this problem? Luckily it doesn't occur every year so it must be down to the weather conditions.