Dahlias (Dahlia pinnata) are natives of central Mexico in the region of Mexico City. The early forms were mostly single flower types that grew on well-drained soils of volcanic origin. Because of their origin, dahlias require well-drained soils, fairly sunny locations, and, of course, proper fertilization and protection from pests.
Dahlias are considered one of the most spectacular garden flowers. There is a great variety of form in dahlias, from the showy dinner-plate size to the bright, little single ones.
Dahlias are natives of the mountainous regions of Mexico and, although they grow in a warm country, they are actually temperate plants requiring cooler conditions. There are 30 species and 20,000 cultivars of Dahlias.
Varieties of Dahlias – There are wide varieties of dahlias based on their sizes, flowering patterns and resemblance to other flowers :-
Single Orchid Dahlias (Star)
Double Orchid Dahlias