Hi. I’ve loved having blue Lobelia in my flower box blooming all summer, but it’s stopped flowering, even though the greenery bit of it isn’t dead. Google says it can be a plant that flowers every year, but my mum says that never happens to hers.
Shall I just pull up? It’s looking pretty messy and rough. I’ll only keep it in my flower box if it’ll flower again next year - otherwise it’s just taking up space. Any advice from a gardener please?