An annual, uncomplicated, and therefore very common twining vine for house entrances, facades, low walls, or balconies. Also suitable as a hanging plant, as well as for interior gardening. The very common varieties "red orange" and "new orange" grow up to approx. 4 metres in height and can be used to hide downpipes, lightning conductors, etc..
(also known as "Brown-Eyed Susan" - Thunbergia alata)
For sunny, or even better, half-shady locations that are protected from heavy winds. Moist but water-permeable soil, best enriched with deciduous compost. A nutrient-rich humus soil, as well as regular fertilising and watering, will promotes growth and flowers. 'Susans' can be easily cultivated in pots and 'hibernate' (be winterised in a proper place) as a pot plant at approx. 6 degrees C. Available mostly as seed mixtures or potted plants from spring onwards.
Mandevillas originally come from South Africa and Madagascar. They are annuals in Europe and have to be pre-cultivated before they can be sold and planted outside at the end of May. Individual plants must be planted 30 - 40 cm apart, 1 metre for pots with several specimens. Growth height depends on the variety -- usually only about 2 metres, but some strong varieties in a large pot or planted in the earth can grow up to 4 metres (see photos). The leaves are heart-shaped / arrow-shaped (pointed); this is a slightly winding twiner (shoots twine a little), somewhat overhanging. The flowers are decorative, the colors in a range of: white, yellow-orange, or brown-red-- all with a brown-black ('chocolate-purple') centre. The varieties "red orange" and "new orange" sold by FassadenGrün belong to the "Sunny Susy"® series and are impressive for their strong growth and early flowering. In general, all varieties of the black-eyed or brown-eyed Susans are extremely richly flowering, even in cooler summers. The flowering time is from June to October. A single flower lasts about 5 days. Sometimes small seed capsules are also formed.