This week, Alan Titchmarsh explains why he is making his garden at Barleywood as hospitable as possible to all forms of wildlife. His butterfly border is now full of plants to attract adult insects and will provide food for them and their caterpillars.He also demonstrates how to grow trees from seed. Pippa Greenwood continues her research into a new biological control for whitefly in greenhouses and conservatories. Plus a look at a floral sheep as large as a double-decker bus, which will soon be flowering in Maidstone, Kent. Covered with 3,000 vibrantly-coloured bedding plants, it will bloom all summer. Series producer John Percival
Executive producer Tony Laryea
BBC MAGAZINE: Gardeners' World is available from newsagents
Alan Titchmarsh: page 41