Red crassula is a succulent plant with flat heads of striking, bright scarlet flowers.
Codonopsis tangshen is an unusual climber, bearing subtle, yellowish-green, bell-shaped flowers, with purple markings on the inside; the root is used in China to make a tonic.
The pagoda flower, so called because of its tall, pyramidal inflorescences, is one of the most spectacular Clerodendrum species.
The dried roots of Chlorophytum tuberosum are used as a popular tonic and aphrodisiac in Ayurvedic medicine.
Wintersweet is grown chiefly for the wonderful scent produced by its small flowers in late winter and early spring.
A low-growing perennial with beautiful, large, blue flowerheads, perennial cornflower is native to central and southern Europe.
The cotton daisy is one of the more widespread species in the mountainous areas of New Zealand.
A star of many Western films, the iconic saguaro cactus is a spectacular feature of the Sonoran Desert in south western North America.
The leaves and fruiting catkins of Fang's hornbeam are larger than those of any other hornbeam.
Doronicum orientale is an early-flowering, lemon-yellow daisy, with a single flowerhead on an upright stem, and soft, rounded leaves.