Beloved by gardeners everywhere, this daisy family genus consists of around 30 species of tuberous rooted perennials and sub-shrubs. They have attractive fliage, with deep to bright green lobed leaves, hollow stems, and bold flowerheads that, due to much cultivation, may vary greatly. Dahlias can be broadly divided into tall border plants and low-growing bedding dahlias, though a more detailed classification sorts them into 10 groups based on the size and type of flowerhead; this ranges from tiny pompon to large giant-flowered cactus types. Colors include shades of white and cream to bright yellow and deep red. Mostly native to Mexico, these flamboyant plants were originally cultivated by the Aztecs for their large edible roots.
CULTIVATION
Plant dahlias in a sunny open position with fertile, free-draining, humus-rich soil. In cold climates, wherea frozen or waterlogged soil is likely to occur, the tubers should be lifted and stored near-dry in a frost-free place. Most species can be propagated by dividing the tubers or by taking cuttings off young shoots.
Top Tip
When planting dahlias, select a site that is heltered from strong winds. Even in a protected spot, dahlias will often need staking to prevent them falling over.
CULTIVATION
Plant dahlias in a sunny open position with fertile, free-draining, humus-rich soil. In cold climates, wherea frozen or waterlogged soil is likely to occur, the tubers should be lifted and stored near-dry in a frost-free place. Most species can be propagated by dividing the tubers or by taking cuttings off young shoots.
Top Tip
When planting dahlias, select a site that is heltered from strong winds. Even in a protected spot, dahlias will often need staking to prevent them falling over.
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