Century plant

A rosette-forming evergreen succulent native to the grasslands, desert scrub, and pinyon-juniper woodlands of Arizona, New Mexico, Texas, and northern Mexico at 4,000 to 8,000 feet. Thick, rigid blue-gray leaves with toothed margins and a one-inch terminal spine form a dense, symmetrical basal rosette to about 24 inches tall by 3 feet wide. Surprisingly cold-hardy for a succulent - reliably hardy to USDA Zone 7 and reported to survive -20°F as long as the cold is dry rather than wet. Each rosette flowers only once, after 10-30 years, sending up a single 20-foot stalk before dying and leaving its rooted offsets behind.

A tall native perennial wildflower of moist meadows and woodland edges across eastern North America, producing large domed clusters of vanilla-scented pink-purple flowers in late summer - among the most reliable late-season nectar sources for monarchs, swallowtails, skippers, and native bees. Formerly classified as Eupatorium purpureum.

Achiote, also sold as annatto or lipstick tree, is a fast-growing evergreen shrub or small tree native from Mexico through Central America to Colombia, Venezuela, the Guianas, Ecuador, Peru, Bolivia, Brazil, Paraguay, and northern Argentina, and planted across the tropics for its seeds. Clusters of pink or white flowers about 2 inches across, like single wild roses, open at the branch tips and are followed by clusters of red to red-brown capsules covered in soft bristles, which split open to show seeds coated in a waxy red-orange layer. That coating is annatto: the coloring and mild seasoning behind achiote paste and sazón, the yellow-orange of many cheeses, butters, and margarines, and the red body paint and lipstick that gave the plant its English name. In a garden it usually stays 6 to 12 feet tall and wide as a specimen or informal hedge, though as a tree it can reach 20 to 30 feet. It is frost-tender and needs a frost-free climate: it is hardy outdoors in USDA zones 10a-12b and grown elsewhere in a large container or conservatory that comes indoors before frost. Outside its native range it has naturalized on many Pacific islands, sparingly so in Hawaii, and in the Galapagos, where the Charles Darwin Foundation rates it potentially invasive.

Cape honeysuckle (Tecomaria capensis, Bignoniaceae) is a vigorous, evergreen scrambling shrub from southern and south-central Africa, valued for tubular orange-to-apricot flowers borne erratically across much of the year. It reaches about 6.6 to 9.8 feet tall and wide as a free-standing shrub, or can be trained much taller on a trellis or wall, and is widely used for informal hedging and as a hot-color border or container plant. It is frost-tender (RHS H1C; roughly USDA 9b-11) - in cooler climates it is grown under glass or as a summer container plant and overwintered indoors. In frost-free, mild climates it can become weedy: it has naturalised and is treated as invasive in parts of Australia and on islands such as the Azores, so site it where suckering and self-layering can be managed. It is not a recognised edible and is not flagged as notably toxic, though several plant parts feature in traditional southern-African medicine; treat it as ornamental rather than for consumption. Note the accepted binomial here is Tecomaria capensis (POWO/GBIF); the widely-seen Tecoma capensis is a synonym.

Loropetalum chinense is an evergreen shrub native to woodlands and thickets across southern China, Japan, Taiwan, and adjacent parts of Southeast Asia, valued in gardens for its distinctive ribbon-like flowers and, in the popular purple-leaved forms, year-round burgundy foliage. It thrives in zones 7-9 as a bold structural shrub or hedging plant, blooming most heavily in late winter to early spring. The honest catch is its absolute dependence on acidic soil: even slightly alkaline pH triggers iron chlorosis, and in the Southeastern US a bacterial crown gall disease can cause rapid branch dieback and plant death, making site preparation and soil testing non-negotiable before planting.

Heavenly bamboo is an evergreen (semi-deciduous in cold winters) shrub native to eastern Asia from the Himalayan foothills to Japan, valued for striking year-round foliage that flushes pink-red in spring, turns green in summer, and blazes red-purple in autumn and winter, plus panicles of white summer flowers and persistent bright-red berries. It is adaptable, drought-tolerant once established, and undemanding in most soils from full sun to part shade. The honest catch is dual: all plant parts - especially the berries - contain cyanogenic compounds, and excessive consumption of the berries can be lethal to cedar waxwings and is toxic to cats and livestock, making it a poor choice wherever birds congregate to feed on winter fruit; and in the southeastern United States it is classified invasive (Florida Category I) and is best replaced with a non-invasive native alternative.