What is eating my dahlia tips
The new growth on my dahlias is being attacked by something but I cannot find any obvious culprits. All of the top leaves and shoot tips look nibbled and blasted mostly round the edges....also some small holes...but the holes and nibbled edges .... which have brownish edges.... are smaller than slug damage. there are no encrustations of aphids...in fact not even the slightest sign of them. The plants which are quite tall look healthy enough below...it's just the tips which are affected and this of course is inhibiting flowering. I have one or two flowers only on each plant. Any suggestions??