Picea abies ‘Inversa’ – A weeping form of Norway Spruce that is ideal for rockeries, where it can elegantly cascade over walls or large boulders. It can also be staked upright, in which case the side branches will hang close to the stem, but once the leader is unsupported it will generally arch over to one side. Grows 3′ high (without support) by 12 to 15′ wide. Hardy to zone 3.
Chamaecyparis lawsoniana ‘Treasure Island’ – An extremely dwarf Lawson Cypress with feathery bluish-green foliage marked with creamy-yellow highlights throughout the year. It does best in morning sun and should get afternoon shade to avoid scorching. It was discovered in Holland and makes an excellent container specimen. Grows 18-24″ high by 12-15″ wide. Hardy to zone 5.
Pinus strobus ‘Pendula’ – A compact, weeping form of Eastern White Pine with elegant cascading branches of soft blue-green needles held in bundles of five. Staking or pruning may be required to train a single leader but each Weeping White Pine eventually becomes its own unique piece of botanical art. Beautiful elongated cones. Grows 12-15′ high by 8-10′ (broader with age). Zone 3.
Picea abies ‘Acrocona’ – Another weeping Norway Spruce with branches that gracefully arch out horizontally from the trunk, with drooping tips and side branches. It is best known for producing very showy reddish-purple immature cones on the tips in spring, which turn brown by summer – with even young plants putting on a decent display. Grows 6-10′ high and wide in 10 years. Zone 3.
Cedrus libani ‘Sargentii’ – A dwarf form of Lebanon Cedar with pendulous branches that was discovered in the Arnold Arboretum in 1919. It features greyish-green needles and a weeping form that lends itself to rockeries and retaining walls. ‘Sargentii’ is best grown in full sun with good soil drainage. Grows 2′ high by 4 to 6′ wide with no support. Hardy to zone 5.