I should really try this - although I'll see what the blood and bone does as a start. I had great fruiting from my one cherry tomato last year and didn't feed it anything other than the tomato food. I'm hoping for the same this year.
Mucky Tiger how were you eating your courgettes? I'm hoping to have loads - but can't think of ways in which to eat that many!! Thought I might ask in the food / recipes section for good ideas (though perhaps I should wait to make sure that my plants do well!).