The kidneys are paired retroperitoneal structures that are normally located between the transverse processes of T12-L3 vertebrae, with the left kidney typically somewhat more superior in position than the right. The upper poles are normally oriented more medially and posteriorly than the lower poles.
Growing Comfrey in Pots. Comfrey will grow in pots (at least 3 gallon), containers such as plastic tubs, or 5-gallon plastic buckets but they do better when not grown in a pot. They have deep roots so prefer growing in the garden where they get more nutrients. The containers need drainage holes in the bottom. Add fertilizer to the potting soil.
If you want toexplore the subject further, search for âpyrrolizidineâ online. My research has convinced me that whole comfrey leaves do not present health risks to livestock.Certain âpeople-foodâ crops also can be used as poultry feed: potatoes, pumpkins, winter squashes, sweet potatoes, plus mangel or fodder beets.omfrey and Other Feed Crops Comfrey, rich in protein and minerals, is a sturdy perennial that can be cut and fed to the birds, or a moveable pen can be rotated over a comfrey patch so the birds can harvest theplants themselves.