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When to Plant Dahlias by Seed. If you’d like to give your Dahlia seeds a head start to the growing season, sow them indoors before spring. “Dahlias can be started indoors from seed six to 10 ...
Dahlias are plants that often intimidate beginners, as they grow from tubers and can be quite sensitive. So, we asked Stone for her essential tips on cultivating dahlias in your own backyard.
Irises are typically planted during the late summer months, but you can also plant rhizomes (the iris’s horizontal, rootlike structure) in early spring. Philippe Gerber - Getty Images Dahlia
From its underground base, the plant will begin sending up hollow, cane-like, 4-sided stems with swollen nodes and large, tripinnate leaves; foliage near the ground is quickly shed. The pendant or nodding flowerheads are 7.5–15 centimetres (3–6 inches) across, with ray florets, typically a lavender or mauvish-pink in colour. [3] [4]
The first plant was called Dahlia pinnata after its pinnate foliage; the second, Dahlia rosea for its rose-purple color. In 1796, from the parts sent by Cervantes, Cavanilles flowered a third plant, which he named Dahlia coccinea for its scarlet color. In 1798, Cavanilles sent D. pinnata seeds to Parma, Italy.
Dahlia pinnata is a perennial herbaceous plant with a rhizome and tuberous roots, reaching a height of 70 to 120 centimetres (28 to 47 inches), rarely 160 cm. The stem is erect, and branched only in the inflorescence. The leaves are usually simple, with leaflets that are ovate and 5–10 centimetres (2–4 in) long. The plant is slightly shaggy.
Dahlia merckii, Merck's dahlia, is a tuberous species of perennial flowering plant in the daisy family, Asteraceae. This herbaceous plant grows to 2.5 metres (8 feet) in height. It has divided leaves , and in late summer to autumn produces single flowers in shades of lilac, white, and pink.
There are 42 accepted species of flowering plants in the genus Dahlia, according to The Plant List. [1] The sectional classification of Dahlia sensu Sørensen (1969) [2] as updated by Saar et al. (2003) [3] and Hansen (2004) [4] and (2008) [5] is as follows (excluding infraspecific taxa);