Currently, iris larvae are changing skins into their fourth instar, or have just changed. The weather's invariably vile when they do this... . Incredibly, they are actually a little ahead of where they were this time last year, though behind on the previous years which brought early springs.
Meanwhile, the Forestry Commission is proposing to aerial spray a small SSSI wood near Pangbourne, Berks, with Bacillus thuringiensis, which kills Lepidoptera larvae, in order to eliminate Oak Processionary Moth. The wood is reputed to hold Purple Emperor. Does anyone know this site - Herridge's & Broom Copses near Pangbourne?
I am unable to express any views as I'm involved with OPM for the NT, and understand the situation.