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Closely related to sunflowers, daisies, chrysanthemums, and zinnias, the dahlia plant produces single-stem flowers that range from 2 inches to 1 foot in diameter.
Dahlias are perennial plants with tuberous roots. They are not frost hardy, and require protection from frost if grown in regions with cold winters. While some have herbaceous stems, others have stems which lignify in the absence of secondary tissue and resprout following winter dormancy, allowing further seasons of growth. [5]
Dahlias come in a seemingly endless variety of shapes, colors, heights, and bloom head sizes, so pick the dahlia most right for your garden. Deadhead the flowers regularly to keep the blooms ...
It was selected by and named to honour Joshua Pritchard Hughes, Bishop of Llandaff, in 1924 and won the RHS Award of Garden Merit in 1928. The plant is about 1 m tall and flowers from June until September. As with all dahlias, frost blackens its foliage, and in areas prone to frost its tubers need to be overwintered in a dry, frost-free place.
Tender plants are those killed by freezing temperatures, while hardy plants survive freezing—at least down to certain temperatures, depending on the plant. "Half-hardy" is a term used sometimes in horticulture to describe bedding plants which are sown in heat in winter or early spring, and planted outside after all danger of frost has passed.
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