hello fellow gardeners. Today I bought myself a rhubarb plant called Champayne. I need advice on caring for it. I want to grow it in a pot is normal potting compost ok to use? Is it best to keep the pot in my unseated greenhouse or in a sunny spot on my patio? Is it right to not harvest any rhubarb sticks until next year? Also when it dies off is it like strawberry plants that come back in the spring? Finally is tomato feed ok to use? I would really appreciate your adviice I'm new and very eager to learn everything about growing fruit and veg.