This is Dorney Court Kitchen Garden in Berkshire: a design-led independent nursery with equally good plants and cake There is a bunch of new kids in town. Pretenders to the horticultural sales throne lining up for a slice of the plant-purchase pie; supermarkets and high street retailers are jostling into the base of a pyramid of gardening expertise which is topped by artisan nurseries and with garden centres, DIY sheds and their ilk piled up variously beneath. So how are they doing? Donning a large hat and fake moustache dark glasses, I embarked on a little espionage. First stop was a new budget supermarket that has opened in town I have been told great things about their simple, desirable range of stock nothing too complex...‘flying off the shelves’ was the message I got. I tend to champion specialists and the little guys, but I was open minded. Until I got there. Exhibit A was a Dutch trolley of wilted petunias. The box cones at about a tenner...were just a b...