Small Garden with decks and fences
Magnolia 'Little Gem'-easily controlled to te 2.5-3m height range that suits your requirements ben. Will generally form a clipped block of foliage over time though not as dense as the lilly pilly we chatted about. *Could be used as a "pleached" hedge(stripping the trunk of foliage and promoting foliage on the top half of the plant) so that a second tier of plant material can be included underneath for a more dynamic visual aesthetic.
An example of pleaching. Pleached hedges are making a comeback as modern gardeners recognize the usefulness of stilt-hedges in urban and suburban gardens to create privacy, primarily, but also to create wind and sound blocks, shade and habitats for wildlife within the confines of limited space. Good candidates for pleaching: American Hornbeam, Hawthorn, Linden, Pear and Apple
On a backyard patio, a planter box with a trellis is an accessible setup for training an espaliered tree. Simply tie the plant's branches directly to the wood slats as they grow and spread, using jute twine or some other soft, flexible type of plant tie. | Photo: Gay Bumgarner/Alamy | thisoldhouse.com