I'm really pleased this year with my Lobelia tupa. This is a lovely but somewhat tender perennial, which grows to around 3 feet tall and has the most wonderful spires of dark red flowers. I bought this about three years ago, but it never did very well, so last autumn, I replanted it on a sunny bank, and this seemed to do the trick! It obviously needs a well-drained sunny site, and although I had originally planted it in a south-facing border, it wasn't particularly well-drained and also tended to get overshadowed by more exuberant neighbours. It is now covered with flowers, and looks wonderful!

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