These come in a range of flower shapes, styles and colours and are one of the most popular late summer plants. Border dahlias are named varieties propagated bywhile bedding dahlias are smaller and usually grown from .
Suitable site and soil.need a sunny and well-drained soil. Give border dahlias 110gm – 4oz per sq.m. Of bonemeal when planting. For bedding and border dahlias dig in well-rotted manure the previous autumn.
Cultivation and care. Plant tubers of border dahlias in spring 10cm – 4in deep. Put stakes inbefore planting. Pinch out leading shoots one month after planting. In autumn, 60 let tops become frost blackened, then cut down and lift tubers for frost-free storage.
Propagation Place tubers in 50 – 50 moist peat and sand in early spring with crowns above the surface. When the buds begin to swell, divide the tubers with a sharp knife. Sow bedding dahlias in late winter in boxes, germinate at 15°C – 60°F,into individual , plant in late spring.
Recommended varieties. There are too many border dahlias to list but the good for planting with other herbaceous plants are the peony-flowered kinds such as ‘Bishop of Llandaff and ‘Orange Flora’. Bedding dahlias:strains ‘Early Bird Mixed’ and ‘Redskin’ are and germinate.
Pests and diseases. Grey mouid and sclerotinia rot can affect border kinds.and earwigs can be a problem.
After frost has discoloured the foliage, lift the tubers carefully and leave upside down for a week while water stored in thedrains out. Keep the tubers in a box just covered with peat where they will not be damaged by frost.