Escallonia ‘Red Elf’ – Despite the name, this is a medium-sized broadleaf evergreen shrub. It bears deep rose-red tubular flowers in small clusters over along period, from late spring into summer. The tiny glossy dark green leaves are closely spaced, giving this plant good density. Prefers full sun with well drained soils. Grows 3 to 5′ high and wide ( taller without pruning). Zone 8.
Escallonia x exoniensis ‘Pink Princess’ (syn. ‘Fradesii’, ‘Frades’) – Probably the most common and tolerant of the Escallonia, it was developed by the Frades Nursery of California in the 1950’s. It features pale pink to rose tubular flowers held in terminal clusters in summer. ‘Pink Princess’ makes a nice informal flowering hedge. Grows 5-6′ high and wide. Hardy to zone 7.
Escallonia NEWPORT DWARF (syn. ‘Compakta’) -A slow growing evergreen shrub with rosy-red tubular blooms, often with white highlights – these begin appearing in early summer and continue sporadically afterwards. Grow in a sheltered site and prune back any winter die-back in early spring. Drought tolerant once established. Grows 2′ high by 3′ wide. Hardy to zone 7.
Genista lydia – This native of the Balkans is an RHS Award of Garden Merit winner. It features bright yellow pea-like flowers that evenly cover the plant in early summer. This deciduous shrub works well as a tall groundcover on difficult steep slopes or drought-prone areas. It has small simple green leaves and is also known as Woadwaxen. Grows 18″ high by 2-3′ wide. Zone 5.
Genista pilosa ‘Vancouver Gold’ – A low deciduous shrub often used as a groundcover that was introduced by the University of British Columbia. The bright yellow flowers literally envelop the plant below in a spectacular flower display from May to June. The tiny green leaves are hardly noticed when they drop in fall. A good choice for covering banks. Grows 6-8″ high by 24-30″. Z4.