It is a truth universally acknowledged that a garden is only three days away from anarchy. You turn your back and the grass grows furiously, weeds wreak havoc, lupins sag, hydrangeas wilt and roses seize the opportunity to send out mad suckers that lurch in front of your face as you walk around on your return. Worst of all, the Evil Kingdom of Slugs dispatches a crack squad to blitz the most precious plants. If I promised you a delightful Isotoma plant, having sung the praises of its charming little blue flowers and serrated lance-shaped leaves, I regret that you are out of luck - they've been decimated. It is all very demoralising.