ball dahlia tuber
- available to order from winter 2020
- 1 tuber
- 3 tubers
- Position: full sun
- Soil: fertile, humus-rich soil
- Rate of growth: average
- Flowering period: July to September
- Hardiness: half hardy (may need winter protection)
A classic for the cottage garden, with lilac-purple ball-shaped flowers (up to 5cm across), that bob and sway happily on their slender stems. Mix it with pale pinks and purples or rich plums and plant more than you need so you have a constant supply for the vase.
While in growth, provide a high-nitrogen liquid feed each week in June, then a high-potash fertiliser each week from July to September. Stake with canes or brushwood if it becomes necessary. In mild areas, leave them in situ over winter, but protect the crown with a generous layer of dry mulch. In colder areas, carefully lift and clean the tubers once the first frosts have blackened the foliage and allow them to dry naturally indoors. Then place the dry tubers in a shallow tray, just covered with slightly moist potting compost, sand or vermiculite and store in a frost-free place until planting out again.
- CAUTION do not eat ornamental bulbs