Umbrella Bamboo is Spreading!?
I purchased three Umbrella Bamboo plants in July to create a hedge along my backyard fence. I chose this type because it is a clumping variety and I did not want to introduce anything invasive. However I am concerned because I am noticing rhizome growth way beyond the expected rate. (2-3 feet in one case) I am concerned that I have actually planted a running variety. Anyone with experience or suggestions please help!