Most trees and shrubs have potential to make hedges. More information on suitable species can be found on our selecting plants for hedging page.
Hedging plants are often supplied as bare-root specimens, which are usually inexpensive. However, pot-grown plants are equally suitable but cost a little more. Evergreens, especially, are often sold as root-wrapped, where the roots are in a soil ball contained by a fabric casing. This wrapping must be removed, if it is of synthetic fibre, but natural fibre wrappings are sometimes left on. Removal of wrapping is still recommended, though.
Small hedge plants are often called whips and are about 60cm (2ft) high. They are very cheap and are easy to establish. Larger plants need more care and are more expensive. It is best to plant whips closely as they not only form a thick hedge, but compete with each other and so reduce the amount of trimming required.