Cassia is a genus in the family Fabacee, which originates from Asia and Africa and includes small trees and shrubs with garish white, yellow or pink flowering. There are both annual and perennial species, and the varieties belonging to the Cesalpinacee sub-family appear as thick bushes with erect branches and rounded foliage.
The national flower of South Carolina, gelsemium is a pant in the family Loganiaceae and in fact it is native to central and northern America. This climbing, evergreen plant is very rustic and resistant. It has thin, elongated, light-green leaves and it produces little funnel-shaped, fragrant, yellow flowers. Since its appearance and its scent vaguely resemble those of jasmines, gelsemum is also commonly known as “yellow jasmine”.
Duranta repens is a small, crawling or partially erect shrub which is native to Central America. The thin semi-woody stems are densely branched, the leaves are oval and small; it can be evergreen as long as it grows in temperate areas with mild winters. It prefers sunny places: poor light conditions can lead to an equally scarce blooming. However, it does not fear the cold and it can even withstand short periods of frost.
It is a small perennial plant, cultivated as an annual plant. The Verbena belongs to the family Verbenaceae and it originates from Central and South America and from Europe. It has hanging shape and long branches. The light green leaves are small, oval, sharp, dentate and with marked veins. It produces small and strongly perfumed flowers, variously colored, from white to pink, red, purple and speckled bicolor. The flowers are collected in spikes at the end of the branches. According to the tradition it is a holy plant and it has curative, analgesic and healing properties.
Anigozanthos is commonly known as “kangaroo paw” because of the shape of its flowers. It is a rhizomatous perennial plant hailing from Austrialia. It prefers sunny or semi-shaded places; these plants do not fear the cold and they can withstand periods of intense cold. Sometimes during the winter it loses the aerial part which they grow back in spring. A watery lymph is stored in the roots of the plant, which allows it to withstand long periods of drought without problems.
Gaura is a perennial plant hailing from North America, mostly from Texas, in the family Onagraceae. As its origin might suggest, it is a rustic and resistant plant. It produces a thick bush with green/ reddish leaves and thin stems which bear four-petalled, pink or white flowers with yellow stamens, similar to orchids.
It is a very beautiful and evergreen shrub originating from China: it is a slow-growing plant, with glossy and coriaceous foliage preferably to be cultivated in open ground; throughout the spring numerous small pink or white star flowers bloom at the apex of the branches. It has to be placed in a well-lit place, in the sun or in partial shade; it prefers rich and fertile soils. It suffers from excessive humidity. It tolerates both drought and frost quite well, and it can resist in the garden even if temperatures fall below -10/-15° C.