Surrey, United Kingdom
Many of the conifer hedges in this area are showing signs of dying and it is thought that the Cyprus aphid is responsible. My son thought my box shrubs might be affected too as they areturning yellow. However I am now told that they do produce yellow flowers - is that so. I know they are also prone to box blight. Please advise treatment for the blight and also recommend a fertiliser for box shrubs.
- 5 Jun, 2011