In this episode, Carol is looking at one of the gems of early spring - the crocus, and meets world-renowned crocus expert Brian Mathew. Over the next few weeks, Joe is looking at gardens that thrive despite their extreme locations. He starts in west Wales in a bog garden; looking at plants that love the rainfall and soggy soil. Rachel visits a fabulous rose garden, home to over 2,500 different varieties and the perfect place to see how our tastes and fashions in roses have changed over the 20th century. Meanwhile, back at Longmeadow, Monty is showing us what we can do now to guarantee a fantastic display of roses in the summer. He is also adding to his woodland spring planting and chitting his potatoes in anticipation of creamy new potatoes later in the year