I live in southern ohio. I placed an avacado seed in a pot of dirt and it took off. I is now as tall as I am.(5'4"). It has grown a long skinny trunk and is hugh on the top and is now growing another branch. Is this normal?? Will the trunk ever get thicker? Will I have to keep it held up with a dowel rod forever? Will I ever be able to plant it outside? It is now 2 years old. Help?? I am totaly lost. I never even expected it to grow much less get this tall.