Monty is repairing turf, sowing sweetcorn and planting pots for evening fragrance this summer. Adam travels to Dublin to meet musician Adam Clayton, from the rock band U2, who, when not playing bass guitar, prefers to spend time in his garden - especially when his precious collection of camellias, magnolias and rhododendrons are in full flower. There's a visit to Arundel Castle in West Sussex to marvel at their stunning tulip display, whilst in Devon, Carol continues to show how everyone can grow plants for free - this time through division. Plus a delphinium lover near Bristol for whom the colours of plants are much more important than their names.