Q.Our Brugmansia Has A Disease On The Leaves Please Can You Identify It And Advise A Cure
This plant was housed in a conservatory during the winter but has developed this discolouring of the leaves in the last few weeks. It has flowered almost continuously since April but has dropped many more leaves than usual

Certified GKH Gardening Expert
Unfortunately, your photos did not come through. I am unable to diagnose the issue.
What I can do in the meantime is point you to our article on the care of Brugmansia:
https://www.gardeningknowhow.com/ornamental/trees/brugmansia/growing-brugmansias-in-containers.htm