Hi I have this lupin and I have read that you should cut the flower stalks to help promote a second bloom but I was wondering on when I should cut the flower stalks for this to happen?
I'm no expert here but it looks as though the three big ones are on their way out and the little pod thingies will start to fall off. I'd chop them off first, then the two to the right of the picture once they have got taller. It will let the little ones come through. Lovely plant by the way!
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More, smaller flowers will sporadically appear. Have had them going right into September.
Lovely plant by the way!