DimorphothecaThe most common species in the genus is Dimorphotheca sinuata, which is native to South Africa. It is an annual herb that grows to a height of about 30 cm (12 in). The leaves are linear to oblong-lanceolate, and the flowers are white with a blue or purple center. Dimorphotheca pluvialis, native to southern Africa, is another common species. It is a perennial herb that grows to a height of about 1 m (3 ft). The leaves are oblong to lanceolate, and the flowers are white with a purple or pink center. Dimorphotheca ecklonis, also native to southern Africa, is a perennial herb that grows to a height of about 2 m (6 ft). The leaves are oblanceolate, and the flowers are white with a blue or purple center.
To produce high-quality dimorphotheca flowers, growers must start with clean, disease-free seeds. The key to successful germination and establishment is providing adequate moisture and ensuring good drainage.
Once the seeds have germinated, they should be transplanted into individual pots or cells filled with a well-drained, sterile growing medium. The temperature of the growing medium should be kept at around 70°F (21°C) for optimal germination and seedling growth.
Dimorphotheca plants should be grown in an area that receives full sun for most of the day. They will tolerate some light shade, but this will result in fewer flowers being produced. Once the plants are large enough to handle, they can be transplanted into the garden or into larger pots. Space them about 12 inches (30 cm) apart so that they have plenty of room to grow.
Water the plants regularly, especially during periods of hot, dry weather. Dimorphotheca is relatively drought tolerant once they are established, but they will flower better if they are kept evenly moist. Apply a balanced fertilizer to the plants every few weeks during the growing season. This will help to promote abundant flower production. To encourage continuous flowering, deadhead spent blooms regularly. Cut the stems back to just above a leaf node so that new flowers can emerge.
Dimorphotheca is generally not bothered by pests or diseases, but they can be susceptible to fungal problems if they are grown in overly wet conditions. If you notice any signs of disease, treat the plants with a fungicide according to the manufacturer’s instructions.
Global dimorphotheca production
According to a report by the Food and Agriculture Organization of the United Nations (FAO), global production of dimorphotheca was estimated at 1.2 million tonnes in 2013. The majority of this production was concentrated in South Africa, where over 80% of the world's dimorphotheca is grown. Other major producers include Namibia, Zimbabwe, Botswana, and Tanzania.
The FAO report also indicated that South Africa is by far the largest exporter of dimorphotheca, accounting for over 90% of global exports. Namibia is the second largest exporter, with a 5% share of the global market.
Dimorphotheca is used primarily as a cut flower and is popular for its showy and long-lasting blooms. It is also used in the production of oils and cosmetics.
The dimorphotheca plant is a member of the Asteraceae, or daisy, family. It is an annual herb that grows to a height of 30-60 cm (12-24 inches). The leaves are dark green and lanceolate, with serrated margins. The flowers are borne in inflorescences of 2-12 flowers each. The flowers have a yellow center and petals that are white, pink, purple, or blue. Dimorphotheca is native to southern Africa.
The name dimorphotheca comes from the Greek words for "two forms" and "a case or covering." This refers to the two different types of flowers that can be found on the same plant. The ray flowers are the showy outer petals, while the disc flowers are the small inner florets.