We inherited a paulownia from the last owners and the first couple of years it did well, we got the purple flowers in spring and then huge leaves for the summer.
I did notice that the leaves started to have dark patches on them and look unhealthy but it continued to grow well in generally.
Then we had some building work a couple of years ago and the builders did use that part of the garden to rinse out plastering buckets and the like so I don’t know if that is a factor, but it is really unwell now. Very few leaves and what are there are unhealthily, none of the large leaves we had in the past. Other plants in that area seem unaffected - we are normally an acid soil.
Any tree experts out there?