Systemic insecticide for trees

Hi - something is eating holes in the leaves of my silver birches and damaging them. Can anyone recommend a systemic insecticide that is watered into the roots of a plant. They are too big for me to spray them.

Thanks

Ann

 

Ann,

I dont think there is such a product, as systemic insecticide is taken in through the leaves.

I think you will find it is slugs and snails. Try a few slug pellets round the base

 

Possibly caterpillars. They devoured many of the leaves on one of my trees. It took some figuring out what was happening, as the caterpillars were so well camoflaged that they were hard to spot even if you were staring right at them.

 

Thanks - I found one systemic root douche manufactured by Bayer, but it is only available in the US, wonder why? Anyway - thanks for replies. My birches are quite new, the leaves were decimated by icy winds a few months ago and now something is eating the new growth. It could possibly be caterpillars but I can't see anything. I am not having much luck with them at the moment.:cry:

Ann

 

You could consider the organic option, such as nematodes. FC love trying this stuff out and have done a fair bit of research into it.
http://www.unwins.co.uk/pest-and-disease-control-cid120.html

BTW a photo of your problem may be beneficial to see what the problem is also. Any chance of one?

Matthew

 

Oooooh that looks so interesting - think I might explore further. Thank you