Oriental poppy

A short-lived native perennial of wet woodland edges, stream banks, and ditches across the Americas, named for the brilliant scarlet-red flowers that rise on erect, unbranched terminal spikes from mid-to-late summer. Each tubular, two-lipped bloom is shaped for the hummingbird tongue - the plant depends on ruby-throated hummingbirds for pollination because most insects cannot work the long flower tube. It demands constant moisture and tolerates brief flooding, but its foliage carries alkaloids that are very toxic to humans if eaten.

Iris ensata is a beardless water iris native to Japan, China, Korea, and the Russian Far East, prized for some of the most spectacular midsummer flowers in the perennial garden - wide, flat blooms in purples, whites, and bicolors on upright stems to 30 inches. Fifteen cultivars hold RHS Award of Garden Merit recognition, and Japanese breeders have refined three distinct strains (Edo, Higo, Ise) over five centuries. The honest catch is demanding site requirements: it needs consistently moist, reliably acidic soil (pH 5.5–6.5) and resents lime; even slightly alkaline or dry soil leads to chlorosis, poor bloom, and eventual decline, making it unforgiving in gardens with alkaline tap water or drought.

A tall, lush perennial lupine of streambanks and mountain meadows in western North America, with big palm-shaped leaves and dense spires of blue to purple pea flowers; crossed with other lupines, it is the parent of the familiar Russell garden lupines. Outside its native range it is a serious invader. The Lady Bird Johnson Wildflower Center calls it widely naturalized and often invasive in the northeastern United States and eastern Canada; New Zealand lists it as an environmental weed, seriously invasive in the gravel riverbeds of South Canterbury; and in Wisconsin it crosses with the native wild lupine, producing hybrids that the caterpillars of the endangered Karner blue butterfly cannot use. In eastern North America, plant the native wild lupine (Lupinus perennis) instead. The seeds are poisonous.

Eucomis comosa, the pineapple lily or wine eucomis, is a deciduous summer-growing bulb in the asparagus family (Asparagaceae), endemic to the Eastern Cape and KwaZulu-Natal provinces of South Africa. From a large, often purple bulb it sends up a basal rosette of strap-shaped leaves and a stout flower spike packed with white-to-purple star flowers, crowned by a tuft of leafy bracts that gives it a pineapple-like silhouette in mid-to-late summer. It is a striking focal-point and container subject for borders, prized for its long-lasting bloom. Hardiness is the load-bearing caution: it is frost-tender to only borderline-hardy (RHS H4, roughly USDA 8–10, surviving brief dips near 23 to 14°F in well-drained, sheltered ground), so in colder climates it is grown in pots and lifted or moved under cover for winter, and it resents winter wet. The bulb and foliage contain saponins and can cause mild mouth irritation, drooling, and stomach upset if eaten, so keep it away from pets and children.

Gerbera jamesonii, the Barberton daisy (also Transvaal daisy), is a tufted evergreen perennial herb in the daisy family (Asteraceae) native to the summer-rainfall grasslands and rocky woodland of north-eastern South Africa and Eswatini. It forms a basal rosette of lobed leaves from which leafless flowering scapes rise, each topped by a single large daisy-style flowerhead in orange-red, yellow, pink, or white. It is the wild ancestor of the thousands of florist gerbera cultivars and earns its place as a long-blooming focal point in borders and patio containers, attractive to bees and other insects. The load-bearing caution is frost-tenderness: RHS rates it H1C, meaning it survives outdoors only in summer or the very mildest, frost-free spots and must be overwintered under glass elsewhere (roughly USDA 9-11). It is non-toxic, with no reported poisoning hazard to people or pets, making it a safe choice where toxicity is a concern.

Aloe maculata (soap aloe, also called zebra aloe; long sold as Aloe saponaria) is a clumping, stemless succulent from southern Africa with broad, triangular leaves marked by distinctive "H-shaped" pale spots. It is grown for its flat-topped racemes of tubular flowers in shades of orange-red to coral and yellow, held on tall branched stalks that draw sunbirds, bees, and other insects. A tough, drought- and salt-tolerant groundcover that spreads by suckers, it suits rock gardens, dry borders, coastal plantings, and containers in warm climates. It is frost-tender: the RHS rates it H1C (roughly USDA 9b-11), so leaves are damaged below freezing and it needs protection or indoor wintering where frosts occur. The leaf gel is used traditionally for skin and other ailments, but the plant is recorded as harmful if eaten (handle with care; seeds are reputedly poisonous), so treat it as not for casual consumption around people and pets.