On 11/10/16 17:51, BobHobden wrote:
"Jeff Layman" wrote

Of course sooty mould and scale go together, problem is are those other
pests a pest or something else that has become stuck on the sticky excreta
of the scale? Try blasting all leaves and stems clean of scale and mould
with a sprayer kept pumped up to max pressure. A little washing up liquid
(or Soft Soap) in the water helps (as does a Wet Suit) . :-)

Well, as it happens I have to clean the greenhouse glass soon. So out
will come the high-pressure washer. If it blasts all the leaves off the
tree too, that won't matter - it's just an extreme was of ridding the
tree of nasties! And it will remove anything hanging around in crevices
in the bark. Of course, it will be washed outside, well away from the
greenhouse so any predators can have a meal.

--

Jeff