Question: what is the difference between red rhubarb and green rhubarb?
Answer: Green rhubarb will always be green. The only sure way to get red stems on your rhubarb is by purchasing dormant crowns of a good quality, properly named, red stemmed variety. It's not that green stems aren't edible. ... Because crowns are produced by dividing rhubarb plants, they can be a bit hard to come by.