Tree peony

David viburnum is a compact, mound-forming evergreen shrub native to western China (its provenance usually given as the Sichuan / Yunnan region), grown for its bold, deeply three-veined glossy leaves, small clusters of white flowers in late spring, and - when fruiting - striking oval drupes in a distinctive metallic turquoise-blue. It holds the RHS Award of Garden Merit and suits the front of borders, shaded corners, and containers in cool-temperate to mild climates. The honest catch is a fundamental one: it is dioecious, so you must plant at least one male and one female together to get the celebrated blue fruit - a single plant in isolation will never berry, and many gardeners discover this only after years of waiting.

Japanese box is a compact, dense evergreen shrub long cultivated in Japan (where it was first described from cultivated plants of uncertain wild origin) with truly wild populations known from Taiwan, used for centuries for topiary, low hedging, and bonsai. Its fine-textured small leaves and naturally tidy habit make it one of the most widely planted formal garden shrubs in temperate regions, and the 'Faulkner' cultivar holds the RHS Award of Garden Merit. The honest catch is a double threat: all parts contain steroidal alkaloids (cyclobuxine) and are toxic to humans and livestock, and the species is under sustained pressure from box blight (Calonectria pseudonaviculata) and the box tree moth (Cydalima perspectalis), with B. microphylla documented as more susceptible than the common European B. sempervirens, so an established hedge can be defoliated within weeks.

Snowrose is a small evergreen-to-semi-evergreen shrub native to open subtropical woodlands and wet meadows from India through southern China to Japan (Wikipedia), prized for its near-continuous flush of tiny white funnel-shaped flowers, opening from pink buds, from early spring to near autumn. It thrives in containers and is one of the world's most commonly sold bonsai subjects, tolerating hard pruning and offering dense, fine-textured foliage. The honest catch is twofold: it is frost-tender (USDA zones 9-11 outdoors; zones 7-8 only as a protected container plant), and it is notoriously fussy - overwatering, underwatering, cold drafts, or simply being moved can trigger sudden, dramatic leaf drop. (Note: GBIF now files this taxon under the accepted name Buchozia japonica, with Serissa japonica a synonym.)

A virtually stemless, broadleaf-evergreen native of central and eastern North America: a basal rosette of rigid, sword-shaped, spine-tipped leaves up to 30 inches long, fringed along the margins with the curly white threads that give the species its name. In early summer a flowering stalk shoots from the center to 5 to 8 feet, carrying nodding, bell-shaped, creamy-white flowers. Tough enough for poor sandy soil, heat, drought, and salt spray, it earns its keep as architectural structure in dry and seaside gardens.

A large, vigorous, fountain-shaped deciduous shrub that earns its common name in late spring, when its arching stems are smothered in masses of pale-pink, yellow-throated, bell-shaped flowers. Native to China, it is one of the great old-fashioned spring shrubs - spectacular in full bloom, much loved by bees, and offering peeling brown bark for quiet winter interest. It is also genuinely big: expect 6 to 10 feet tall and wide at maturity, so give it room rather than fighting its size with the shears. The form to seek out is the Award-winning "Pink Cloud", which carries a clearer, richer pink than the variable seed-grown species.

Bodnant viburnum is a garden hybrid (Viburnum farreri × V. grandiflorum) bred circa 1935 at Bodnant Garden in Wales, with no wild native range. Its signature appeal is intensely fragrant, deep-pink flower clusters that open on bare stems from November through March - a unique winter-to-early-spring performance that few shrubs can match. The honest catch is timing: those early flowers are highly frost-tender and a single hard freeze after they open can destroy an entire season's bloom, leaving the plant ornamentally ordinary until autumn foliage color arrives.