Thank you for your help.@Matte91 - the infestation seems pretty severe, I would consider this an emergency action required situation. I would "go nuclear" rather than waste time with less effective insecticidal soaps and such. There is a difference between a tree confined in a pot and a tree in the ground. Lime sulfur is a fungicide, not an insecticide, it will not help at all.
Use a full strength pesticide that lists adelgids as a target insect. My go to would probably be imidacloprid in the formulation by Bonide. But there are other chemicals that work.
I just noticed you are in Denmark. Look for a pesticide with Spinosad, see if the label lists adelgids. It might be a good option for you.
The link below is for being able to read the labels. As far as I know, they do not ship to Denmark, so may not be of any help at all to you, but they do ship all over north america, so it will help USA and Canada members.
I just saw this on my JBP this weekend and sprayed the trees with Neem oil, it was pretty bad and killing the tree it looked like. I hope that stopped them in there tracks, won't know till Saturday, I see those trees once a week.Hello.
Can someone tell me what the white stuff on the pine candles is?
It doesn't look good and it looks like there only are needles on the tips from last years growth.
Thank you in advance!
I found a product that contains Spinosad. It's a product used for killing ants. It's not organic. Do you think that would work?Spinosad is "Organic" in the USA, it is a fermentation product from some bacteria of one type or another. It is quite new on the market in the USA. It is probably legal in the EU. You will have to dig into what is legal to use in your country. There are products that work, some may be from Bacillus thuringiensis or other beneficial bacteria. Do come checking, you might have the same product under a completely different name.
It is spring, if you have any new, tender growth, Lime Sulfur can be a very bad choice. It is sprayed on dormant trees only because it damages tender young growth.