Q.What Is Wrong With My Japonica?
I have had this plant in a pot for 2 years. I have planted it in the garden now. It is just straight up and down and not bushing out. There is new growth at the bottom and 1 bit branching off from the trunk. It is 4 feet high. The leaves in the middle are hanging and yellow.Thanks

Certified GKH Gardening Expert
It looks like a Japanese aralia (Aralia japonica or Fatsia japonica). There is likely some transplant shock going on. It also looks like it is in sun and they need medium to full shade. Also they need a slightly acidic soil which may be different in the ground compared to what was in the container. It also needs pruning to get bushy. Here are some growing tips to compare with yours:
https://www.gardeningknowhow.com/houseplants/aralia-plants/japanese-aralia-care.htm