Gardening & Plant Care Christmas Rose – Where to buy Helleborus Winter's Passion Find out about Christmas Rose (Helleborus), the famous outdoor festive winter plant with beautiful varieties, available at Boma Garden Centre, Kentish Town, London. The Best Christmas Plants – The UK’s Favourite Holiday Flowers Boma recommends the best Christmas Plants for gifts and homes available in London, picked by customers from 20 years of feedback. Do you have gardening or plant questions? Ask the team