I just received a Wonderful Pomegranate sapling in the mail. It is 18 inches tall. Its single trunk is so thin and tall that it can't stand up by itself. I believe the gardening vernacular to describe this is "leggy". How do I strengthen it to be self-dependent?
As an aside, pomegranates naturally grow as shrubs (multiple trunks). I think the nursery trained this one as a single trunk as evidenced by thinning cuts at the very bottom of the tree, causing the weird zigzag shape.
Update March 26, 2015
I planted the pomegranate plant in the ground last year. It's still leggy. You can see many branches arching over. On the other hand, the foliage is lush and the vertical growth rate is stupendous. I thought planting it outdoors would help. It's put in a sunny spot. The wind was supposed to make the limbs grow stronger, but it didn't.