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Fungal diseases; Crown rot Sclerotium rolfsii: Cylindrocarpon root rot Cylindrocarpon destructans: Fusarium root rot Fusarium solani: Gray mold Botrytis cinerea: Leaf spot Alternaria sp. Corynespora cassiicola. Phytophthora root and crown rot Phytophthora nicotianae var. parasitica Phytophthora nicotianae var. nicotianae Phytophthora cryptogea ...
African violets are very easy to propagate from leaf cuttings—and what's better than free new plants?! "Start by simply pinching off a leaf with stem, plant stem in vermiculite or light soil ...
Streptocarpus ionanthus (H.Wendl.) Christenh. As of March 2020, Plants of the World Online accepted the following subspecies and varieties. Many have previously been treated as separate species in the no longer recognized genus Saintpaulia.
African violets are commonly propagated asexually. Plants can be divided into smaller daughter plants or even grown from leaf cuttings. [13] Growing African violets from seed is rare, and most commercially available plants are produced from cuttings and tissue culture. [14]
Streptocarpus sect. Saintpaulia ("African violet") is a separate section within Streptocarpus subgenus Streptocarpella. [ 6 ] DNA studies have shown that, despite not having a twisted fruit, African violets evolved from within the Tanzanian Streptocarpus subgenus Streptocarpella .
Symptoms of infection include a downward curling of the leaves, leaf tip dieback, stunting, necrosis of growing leaf tips, sunken 'chicken pox-like' spots on leaves (often with a surrounding halo), stem death and yellowing. [7] Since these symptoms are so generic, extreme caution must be taken when introducing new plants to your greenhouse.
Streptocarpus goetzeanus has stems of about 40 cm in length with leaves of 1.6-3.8 cm long and 1.4-3.6 cm wide. The flower is unique to the species. It has five petals, where the top two are violet and the bottom three are white. Distribution. Members of Streptocarpus section Saintpaulia are native to eastern tropical Africa.
Viola is a genus of flowering plants in the violet family Violaceae.It is the largest genus in the family, containing over 680 species. Most species are found in the temperate Northern Hemisphere; however, some are also found in widely divergent areas such as Hawaii, Australasia, and the Andes.
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