After killing off a number of plants inadvertently, it may be hard to face horticultural euthanasia. . . . But the misfortune of these mistakes goes beyond a small blot on your garden. The sad relics are the lessons you are refusing to learn. . . . After four or five years you have to make an assessment of your selections and stop nursing along specimens that long for [permanent quiet peace]. You will be amazed what a lift it will give to your whole garden to be rid of these ghosts.
Source: Growing Pains, 1994
Contributed by: Zaady