Hi all, I'm Rhys and this is my first post on here. Thanks for any help you can give me.
I have 6 tomato plants growing outside in the UK. They are in growbags, 3 'Favorita F1' and 3 'Marmande'. It's been a fairly wet summer here.
On the leaves of one of my Marmande plants, I have started getting these brown spots on some of the leaves, starting at the top of the plant. The leaves feel slightly firm and brittle, and I have attached a photo as below. I've done some reading, but cannot put my finger on what is causing this. Could anyone help me out?
Thanks for any help,