Monty gives advice on plants to use for foliage with tropical proportions and shows us how to plant them to suit their needs, gives a masterclass on herbs to grow in shady areas of the garden and sows sweetcorn and cucumbers for summer harvests. Arit Anderson continues her investigation into the use of peat as she talks to the people involved in the manufacture of compost as well as growers and consumers. In Cheshire, an enthusiast aims to have a clematis in flower every day of the year in his garden and has amassed a collection of over 150 plants in his quest for floral abundance. One of the most vibrant of spring flowering plants is the euphorbia, and Carol Klein is at Oxford Botanic Garden to explore their national collection. We also find out what viewers have been getting up to in their own gardens.