Rhubarb Heartworm I’m harvesting my first rhubarb this year (planted two years ago) and am having a massive problem with rhubarb heartworm. Nearly all the stalks are unusable. Did I probably pick them up when I bought the plants? What do you recommend to make next season better? Or should I just throw everything away and start over with new plants in a different spot in the garden? I’ve read somewhere else about growing them on raised beds?