Aphids on tree

[elfie]

Have a client who has several spruce trees along the back of his garden boundary.  There are thousands of small aphids across the spruce trees and also the adjacent fence.  Don't have a picture of them yet however the Aphids are approx 5mm in size / have a tear shaped body and have 6 legs.

 

I've never seen such an infestation of aphids before.  does anyone have any ideas or encountered such an issue.

 

I will post some pictures tomorrow.

 

Any help greatly appreciated

 

 

  

Edited June 11, 2019 by elfie
spelling

[daveatdave]

just guessing vine weavel a photo is a must

[Southeast Tree Care Ltd]

[Southeast Tree Care Ltd]

Anything like this?

[Paul Cleaver]

I suspect you had a relatively mild winter around your parts, the temperatures were not low enough or consistently low enough to kill most of the overwintering aphid eggs.

[elfie]

Southeast tree care - They do look like these however ours are all black...will posts pics tonight !

 

Paul - Yes the winter was generally mild with very little skiing and low temperatures (not normal)

 

What is the long term effect of these Aphids. Do they damage the Spruce trees ?

[Paul Cleaver]

5 hours ago, elfie said:

Southeast tree care - They do look like these however ours are all black...will posts pics tonight !

 

Paul - Yes the winter was generally mild with very little skiing and low temperatures (not normal)

 

What is the long term effect of these Aphids. Do they damage the Spruce trees ?

Yes they do damage spruce trees, they are sap suckers. With such a heavy infestation they could kill small trees and weaken the larger trees. You could spray the small trees with a current approved pesticide, the larger trees will just have to sit it out and you can hope their predators  can control the infestation

[elfie]

Paul - Many thanks for that,  the trees are however large and will have to sit it out.  I went along tonight and collected a few of the Aphids.  There were not as many on the tree as per last night,  maybe its the cold wet weather ??  Picture attached.

 

[Paul Cleaver]

31 minutes ago, elfie said:

Paul - Many thanks for that,  the trees are however large and will have to sit it out.  I went along tonight and collected a few of the Aphids.  There were not as many on the tree as per last night,  maybe its the cold wet weather ??  Picture attached.

 

looks like a greater black spruce bark aphid

[elfie]

What would be the best spray to kill these aphids on a smaller tree ?