Mini Blue Angel Holly tree leaves yellowing

Question

Small 2ft tree in pot had abundance of flowers which turned to berries, and soon dropped off.
Bottom leaves are turning yellow and falling. I am now left with tree and 5 lovely red berries.

Answer 1

This article has all the info you need on how to treat your holly tree:
https://www.gardeningknowhow.com/ornamental/shrubs/holly/holly-yellow-leaves.htm