How do I prune my Chinese Elm Indoor Bonsai? In this video Lloyd Noall from Bonsai Direct shows us how to prune your indoor bonsai trees. Using Verity's bonsai as an example, you will see how to regain the shape of a bonsai tree using simple pruning techniques. The Chinese Elm (Ulmus pavifolia) is a fantastic indoor bonsai tree, with immense character. Ideal bonsai for beginners - easy to grow, care for and style. Great fun to prune!