This week Gardeners' World is all about pots! Monty Don takes a look at the use of pots and containers and revels in their versatility, practicality and potential and shows us how best to use them in our own gardens. He shares his tips on watering and feeding using comfrey and nettle feeds. Carol Klein returns to Stroud to see how the new gardeners are progressing and helps them select the perfect plant combinations for containers on their shady patio. And we meet garden blogger and writer Niki Preston who reveals how gardening using containers changed her life.