What's good for cleaning the greenhouse? Especially good at getting rid of the moss that accumulates in the frame and around the glass panes. I've picked loads off already.
I normally just pick the lumps of moss out and then wash down with hot soapy water with some Jeyes fluid in it.
I use the pressure washer inside and out. Gets between the overlaps on the glass, takes all the moss off from the framework.
It's one of my least favourite jobs. Always get water down my sleeves and feel guilly for washing out the spiders and insects! Love the end result though.
i use a pressure washer too, and a broom with an old towel wrapped around it for the roof.