Dahlia Black Jack
£3.25 – £9.50
Dahlia Black Jack. Cactus Type. Summer and autumn flowering perennial. Flower Size measures 20 cm across. This is a beautiful stunning dahlia; providing large spiky burgundy flowers that will look perfect in the herbaceous border or in a bed of their own.
Top Size Tubers Supplied.
July to first frost.
1 Tuber, 3 Tubers
Plant: April-May. 7-8 cm of soil on top of the tuber. spacing 60-90 cm. Flowers from July until the first frost. Height 110 cm.
Half hardy. Perennial. These tubers cannot withstand freezing conditions or sitting in water. It is best to start the tubers in pots first, pot size needs to be around 4 ltr. Place the pots either in the greenhouse or somewhere that is frost free. Once growing and free from cold weather then plant out into the garden. If you have well-drained soil, plant them deep and cover in the winter with a mulch. Feed well throughout the growing season with a slow release fertiliser. If your soil is heavy it is best to lift the tubers at first frost, cut the stems back leaving an inch. Store upside down in a frost free environment, replant in April.
Propagation: Divide the tubers every couple of years.