Dahlia delights

Invest in some dahlia tubers now for an inexpensive way of injecting some welcome colour into your borders in late summer. Choose from the beautiful, simple shapes of single dahlias like 'Bishop of Llandaff', or go for pretty pompoms like the warm orange 'David Howard'. Pot them up in a frost-free greenhouse now to get them off to a head start for planting out in late spring.