January is exciting at it's the time to sort out the seeds and ditch all the out-of-date ones and file away the newly ordered packets.
If you're organic, as many people are, a rotation plan is a vital calculation because, should the carrot foliage suddenly acquire a purple tint at the tips (an indicator that carrot root fly is active), it isn't possible to apply an insecticide. Unfortunately, if the infected carrot is removed, the fly problem will move along the row must faster, as if by magic. Should it take hold, the roots will be marred by black horizontal banding and them cream grubs will wriggle free. Worse still, the sweet roots will acquire an unpleasant flavour, designed to put off pests (and any other creature bent on munching the roots).
Organic gardeners are best to follow a logical four-year rotation plan with each
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