A friend gave my 4 tiny stalks of bamboo for Christmas with no directions other than put them is stones and keep water on the so they grow roots . All of hers died ,all of mine have lots of leaves ,the stalks are approimately 1/2 inch in diameter and they have tons of roots on them now. My question is do I keep them in stones and water or do I pot them is soil now ? I have 14 plants in my apartment and I've always been able to keep them alive and multiplying in fact when my family has plants that look dead or need repotted they give them to me. I don't want anything to happen to these bamboo plants can anyone help ?