Could I possibly have it in too much shade? Could that affect it's spreading? It is in the bottom of my yard - could too much wetness affect it?

Thank you for any help. :o)

I thought I'd sent a reply, but it's not appearing -- it sounds like there's some root problems, maybe due to poor drainage, or that, like you said, it's not getting enough sun. How many hours of direct sun does it receive? I wouldn't advise digging it up just to check the roots yet, but is the ground around it always wet, or are there flooded areas nearby after it rains?

Hope this helps,

Jim