I had definitely got mine mixed up. The "real" tumbler hasn't grown upwards at all but has stayed as a very small bush. Although I think I may have stunted it a bit by not potting it on quickly enough... Anyway, one of the 4 had the first tomato on it for ages and now the same plant has half a dozen - they all have plenty of flowers, just waiting for tomatoes now!

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Warning: I have a dangerous tendency to act like I know what I'm talking about.