Lupins are gloriously colourful structural plants that can inject vibrancy into any border and create a striking display. Encouraging another flourishIf you love your lupins and desperately wish to see a second round of luscious blooms, a top tip is to cut back, but not too harshly. If you see your lupin blooms starting to turn over, with rattley seed heads forming, it's time to get your garden clippers out. If lupins look healthy and yet are not flowering, this means they might not be getting enough sun. After transferring your lupins to a sunny position, water in well.