With summer just around the corner, Monty reveals his plans for planting up pots in his cottage garden, shares tips on how to start your own topiary from scratch, and in the veg garden, gets some pumpkins in the ground. Sue Kent visits a unique garden in Carmarthenshire situated around a wooden house on stilts. Designed with an artistic eye, it’s a haven for wildlife with a magnificent pond as its centrepiece. Carol Klein also continues her masterclass on how we can all grow plants for free, and this time she’s taking cuttings. In a sub-tropical garden in Devon is the rare horticultural treat of a Puya chilensis in flower. And in Suffolk, there's a gardener who holds a National Collection of bearded iris created by her great-great-grandfather.