How to Grow and Care for Dahlia

The garden dahlia is a common spring flower that comes in a wide range of colors. The flowers themselves are unscented and attract pollinators, like bees, using only their bright coloration. Dahlia pinnata plants were grown by ancient Aztecs, and it is now the official flower of Mexico. It is genetically related to garden plants like sunflowers and zinnias.

Bell tree dahlia (Dahlia imperialis) is an evergreen tree that will grow from 1.8 to 10 m tall. It blooms in late fall with large, pinkish-lavender, daisy-like flowers. Blossoms hang down like bells. Considered invasive in some areas, this fast-growing tree forms dense stands that can disrupt native flora and fauna. Commonly found growing along roadsides and disturbed areas and along forest edges.

With dozens of selected cultivars, scarlet dahlia is a highly popular ornamental plant, particularly in warmer climates. Despite its common name, the flowers aren't always red, but orange, pale pink, or yellow, as well. Numerous cultivars available on market are made by crossing Dahlia coccinea with Dahlia pinnata.

Species dahlia (Dahlia merckii) is a fairy-like flowering plant that blooms in an array of whites and pinks. They are used in flower beds, displays, garden borders, and cut flower arrangements. Species dahlia attracts welcome friends such as bees, butterflies, and birds.

Dahlia 'Garden Show' is a showy, herbaceous perennial, celebrated for its vibrant, large blossoms that range from pink to red hues. Typically blooming in late summer, dahlia 'Garden Show''s flowers are lush, with layers of petals creating a pompom effect. This cultivar thrives in well-drained soil, needing full sun for optimal growth and blooming. Dahlia 'Garden Show' attracts pollinators and is often a centrepiece in ornamental gardens.