With Monty Don taking a well-earned week off, Adam Frost presents from his home in Cambridgeshire, where he gets to grips with planting up his gravel garden with spring colour, sows some unusual vegetables and starts work on a new project. Carol Klein is in Surrey where she is in the midst of a dazzling display of thousands of tulips, Frances Tophill gets inspiration from the allotmenteers on a site exposed to the elements in Anglesey, north Wales, while Nick Bailey makes the case for trees should be planted with bees in mind. Plus, Mark Lane visits Denmans Garden, West Sussex.