Weekend Gardening Update: For bookworms

COLLECTING second- hand gardening books can be addictive, so here is a warning: Daniel Lloyd of 9 Mortlake Terrace, Kew, Surrey TW9 3DT (081-940 2512) has just published a new catalogue containing more than 1,000 titles. For pounds 100, you can obtain the last edition of Hogg's great Fruit Manual, published in 1884; for pounds 60, the third edition of Heath's Fern Portfolio (1885), covering all the British ferns and their many variants; or for pounds 30, Dykes's great classic, Handbook of Garden Irises, published in 1924.