By Beth Hardie There are some vital checks you need to do to guarantee your houseplants, including orchids, will be healthy and look amazing through the winter and an expert has revealed what they are. We might not be able to admire an awful lot in the garden at the moment, or want to get out there much in the cold weather but you can still enjoy beautiful plants indoors by making sure you keep on top of their care. An expert from the Royal Horticultural Society (RHS), has shared his tips for a stunning display in your home and on your window sill to keep you smiling through the winter. He’s e…