Suppress weeds with this pretty perennial bellflower campanula 39dwarf blue39 is suitable for sunny or semi shade positions and it39s spreading ground cover habit will keep weeds at bay whist providing colour with the beautiful baby45blue flowers height 20cm 4083441 spread 30cm 40123441 supplied as large plug plantsculinary information the flowers can be used as garnishes but are also dried and then cooked in asian cuisine for more details about edible flow