Hi - this is my first post. I'm growing tomatoes for the first time this year - I'm not a gardener! The assistant at the garden centre suggested I buy Red Alert because they do not need staking or picking out. However when I got home, after I had planted my three plants in the grow bag, I realised from the labels that I had picked up a Shirley variety by mistake. My problem is that I cannot tell which one this is - they all look the same to me. Is there any tell tale signs. Or do I just wait for the Shirley one to die given it needs to be grown under glass? It's very annoying because I'd like to replace the Shirley with another Red Alert and put the shirley in my porch instead.