Dahlia 'Dorothy Rose' (D) — Bushy, clump-forming, tuberous perennial

Overview

Dahlia 'Dorothy Rose' (D) is a bushy, clump-forming, tuberous perennial bedding in the genus Dahlia, part of the Asteraceae family, with green, occasionally dark-leaved foliage. Dahlia 'Dorothy Rose' (D) grows best in full sun, and tolerates loam soils and neutral pH. Its UK hardiness is rated H4. Suggested uses include borders, containers and cut flowers.

About

Dahlia 'Dorothy Rose' is a tuberous, clump-forming herbaceous perennial grown for its July–October flowering and use as a cut flower. It forms a well-branched clump of stems with green, occasionally darker foliage. Plant it in full sun on a south-facing, sheltered site in loam that is neutral in pH and kept moist but well-drained. The plant has an H4 hardiness rating, suitable for average UK winter conditions.

About the genus

Dahlias come from the high meadows of Mexico, and somewhere in that heritage is the explanation for how they behave here: tender to frost, hungry, generous beyond all reason. No other plant gives you quite so much for so little. One tuber, planted after the last frost, becomes a shrub's worth of flowers by August — and the more you cut, the more they come.The range is faintly ridiculous. Tight pompoms, spiky cactus types, singles the bees adore, dinner-plates the size of your face. Whatever your garden's mood, there is a dahlia that agrees with it, which is probably why every generation falls out of love with them and then, a decade later, falls straight back in.They're at their best when much of the garden is winding down — late summer into autumn, flowering hard until the first frost calls time. I think of them as the encore. And they always play it.

Written by Henry

In the garden

A member of the Asteraceae, Dahlia 'Dorothy Rose' is a tuberous, clump-forming herbaceous perennial raised for summer–autumn blooms and cutting. It produces a densely branched clump of stems with green, sometimes darker leaves; the flowering season runs from July to October. Grow it where it receives full sun, ideally in loam with a neutral pH and reliably moist but well-drained soil. A south-facing, sheltered position reduces wind damage to the stems and helps flowers develop on strong, straight shoots. Its UK hardiness is H4, meaning it has average winter hardiness across the country; choose a protected spot in exposed gardens. Dahlia 'Dorothy Rose' adapts to both beds and containers, where soil structure and moisture are easier to control. Use it in mixed borders to extend the season from midsummer into autumn, or place containers on a south-facing patio so stems are within easy reach for cutting. For gardeners who use dahlias for the vase, frequent harvesting of open blooms will keep the plant producing through the July–October window and keeps stems accessible for arranging.