Refers to a woody plant smaller than a tree, often used in gardening or landscaping contexts.
庭に小さなブッシュを植えた。
I planted a small bush in the garden.
There's a thick bush growing in the corner of the garden.
Bushes (ブッシュ) are typically counted with 本 like other plants, though low shrubs may sometimes use a different counter depending on context.
Loanword from English 'bush'.