Hello Lesley, my tumbling toms which were doing so well have turned yellow. They are covered in flowers but some of them are not really setting fruit. I've been to the chemist and got the Epsom Salts (I really want a bed in an intensive care unit for them) and will spray the toms as soon as the sun goes down. Do you know if they will need to be sprayed more than once and what the chances of recovery are. I'll be so upset if I lose them at this stage. I hope you can help.