Pruning or shearing plants in bad weather
Pruning or shearing plants in bad weather can unnecessarily spread fungus that enter the plant when there is an open wound. Using two examples, starting with canker that affects fruit trees greatly is sometimes manageable, by pruning off the infected branches that have it, and can stop it completely or at least slow it down dramatically. However the shape of your tree could be ruined by this point. Secondly the devil is around when keeping Box (Buxus) hedges, trying to avoid blight. This can ravage whole hedges that have taken many years to establish.
We firmly suggest to not prune fruit trees with regards to keeping canker away or cutting box hedge when it is raining or misty moist as fungus such as canker, blight and other examples easily spreads this way. Your neighbors plants maybe infected, and the fungus can hop across to your garden much more easily when it is wet or damp. Natural wounds or opening the plants bark up by pruning to fungus, is when the fungus enters the plant. Spray antiseptic kitchen spray or spray bleach on your secateurs or shears and blades when you begin and finish pruning fruit trees or cutting Box hedges. With fruit trees, you certainly should paint grafting compound onto the open wound, this helps to keep the wound dry and free from contaminated air until the wound is sealed. Prune in dry weather, allowing the pruned stems to quickly dry our and seal before fungus is a problem.