hola

a while back i bought a few stalks of bamboo. you know the ones that are cut at about 2 ft and then have the tips waxed.Mine has a side growth about 7-8 inches tall.Right now its in a glass vase with some river pebbles and water. i change the water every week to keep it healthy but its not really growing well.the leaves look good but it grows painstakingly slowly.is there anything i can do to help them along?i have heard of plantiing them in soil.what sjould i do with them?