Posted: 31/05/2017 at 14:28
yes, agree re the buttercup for the last pic. Apart from the leaves, if you look at the stems, that's buttercup not geranium.
Your Mavis Simpson may already have been a seedling of Mavis when you got her. There are many people selling plants who don't know (or maybe don't care) how it all works. I don't grow her so can't comment whether or not true.