Spruce powdery infestation.

[openspaceman]

35 minutes ago, 5thelement said:

Looks like a simple case of powdery mildew due to the excessive heat here.

It will probably be gone by the end of next week  if the current forecast for rain is correct. 

Mildew is a fungus (from america about 100 years ago) this adelgid is a small aphid like insect. It is like the knopper wasp in that it has two successive hosts and it affects one more than the other.

 

Also from america

Edited Friday at 17:57 by openspaceman
last sentence

[Mick Dempsey]

11 minutes ago, openspaceman said:

Mildew is a fungus (from america about 100 years ago) this adelgid is a small aphid like insect. It is like the knopper wasp in that it has two successive hosts and it affects one more than the other.

 

Also from america

Yeah thanks, I read up a bit on it. 
Anyway the bloody trees are going to die…or they won’t I guess. 

Yanks will sometimes spend a great deal on spray treatment, they call it PHC (plant health care) tree care companies over there make good coin doing it. 
Doesn’t really happen here. 
it’s a wait and see..

[openspaceman]

51 minutes ago, Mick Dempsey said:

it’s a wait and see..

Yes, it's a very long time since I was involved in conifer plantation forestry and I cannot remember it causing significant damage to douglas but things have moved on and its hotter and drier plus you are a few hundred miles south and further from the coast, so hotter still.