Violais the largest genus in theViolet fellowship , curb between 525 and 600 annual or recurrent plants and a few small shrubs . They are widely distributed over both the Northern and Southern temperate zones . There are also a handful of shrubby coinage in the Andes , Sandwich Island , and EasternEurope .
The genus was first officially key out by Carl Linnaeus in 1753 with 19 coinage . The character coinage of the genus isViola odorata . The generic name " Viola " derive from the Ancient Greek " ion , " mean " reddish blue . "
BecauseViolas hybridize freely , identification of the species is often hard . Flowers are varying in colouring but not red and unremarkably grow lone on a angry walk . They have five flower petal , four arranged in unlike pairs , the fifth with a spur . In stemmedViolas , leaf may develop on the same stem as the flower , while in stemlessViolas , they originate on disjoined stems . The best - knownViolas normally have inwardness - shaped leaves , but the leaves of other species may have unlike shape .
Photo byMarcela Ferreyra
All species blossom early on in the springtime , but some cultivars or hybrids blossom later . Many species have two types of bloom . One type is showy and look in the spring but often does not bring about seeds in some specie . The rich , less conspicuous efflorescence appear in the early summertime and are whole shut and self - fertilizing .
The coinage from the gamy Andes ofSouth Americaare known as Rosulate Violas or Andinium Violas . They areViolas in which the leaves organise a tight rosette , likeSempervivumor some of theSaxifrages . There are two principal groups . The species that go to the Cotyledon Group are hard - bequeath perennial plants that peradventure live about 15 years . The species that go to the Volcanica Group are easy - leaved annuals or curtly - lived perennials . efflorescence appear at the leaf level in tintinnabulation around the exterior of the rosette .
Growing Conditions for Rosulate Violas
Violas wildly grow in damp woods or meadows . The small , hardy species develop well in the rock and roll garden , and others postulate sharp drainage or a hoummos - rich soil mix with high-pitched wet retention . Yet others need alpine house protection from hard frost and wet conditions in winter . Most species like partial shade and moist but well - drain soil .
Rosulate Violas are mainly found inChileandArgentinaand farm in relatively bare , loose , often volcanic soils . Like many plants in such countries , they have a long taproot to ensure access code to water .
These flora are dusty hardy down toUSDA hardiness zone7a , 0 ° F ( -17.8 ° coke ) .
General Care for Rosulate Violas
Rosulate Violas are know for being difficult to keep alive , but some specie can be grown by experient grower . Magnificent specimens ofViola dasyphyllaandViola cotyledonappear regularly on the show terrace .
The main trouble with Rosulate Violas is etiolation , cause by a lack of light , lead in elongation of the succinct little potato . Cold conditions , dirt contain adequate nutrient , and as much light as potential are all-important . It is know that in any bunch of seedlings , some will promptly etiolate while others may not . So , there is some scope in choose Rosulate Violas more likely to spring up satisfactorily in cultivation .
How to Propagate Rosulate Violas
Rosulate Violas are grown only from seed and with some solitaire .
Toxicity of Rosulate Violas
Violas are non-poisonous for human being and pets . Both the flowers and leafage are comestible , tonic , cooked , or dried .
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