This is called Bonsai.
Rex Vicat Cole has written: 'The artistic anatomy of trees' -- subject(s): Accessible book, Trees in art, Plants in art 'The artistic anatomy of trees, their structure & treatment in painting' -- subject(s): Trees in art
Topiary is the art of creating sculptures with trees and shrubs.
The kind of trees available as clip art include oak, pine, maple and beech. Palm trees are also quite popular. Clip art is available of pretty much any kind of tree one can think of.
The Degenerate Art Show
art building
arterian
Blue trees are not real in nature. The concept of blue trees is often used in art or as a symbol, but there are no naturally occurring blue trees.
An art history student.
You can purchase pictures of white trees from stock photo websites such as Shutterstock, Adobe Stock, or Getty Images. Alternatively, you can also find such pictures for sale on platforms like Etsy or art galleries.
Trimming trees comes under the heading of arboriculture. It is practiced by a tree surgeon or arborist.
topiary
盆栽 (bonsai)