By Jansgarden
United Kingdom 
Hi, back again. My old orange ball Buddleia tree/ bush 12ft tall has a leaf problem. The leaves have holes , the worst ones leaving skeleton type leaves. The Orange balls are dead and going black. We cant see any creepy crawlies anywhere. Any suggestions please. pic of leaves attached
25 Jun, 2020
Answers
Thanks for help, I will try this. Jan
27 Jun, 2020
they have a leaf miner infestation. there will be a small caterpillar inside the top and bottom layer of the leaf eating steadily away.
Not aware of any treatment though. I think I'd be tempted to give it a prune by half and then new growth produced now will harden off by winter. They will be less likely to be newly infested as most of these moths have flown/laid eggs and died now.
the death of the buds could be due to this but I suspect more likely be due to the high sun intensity/heat we are currently having.
see what others suggest.
25 Jun, 2020