Gardening magazine. Monty Don has some top tips for creating new herbaceous perennials for free as he busily fills the gaps in his cottage garden. He also shows what can be done with tulips now that the best of their flowering has been seen for the year. Carol Klein continues her plant hunter series with a visit to a unique display of wild rhododendrons at Minterne House in Dorset originally collected from the Himalayas and beyond.