Dahlia 'Bishop of Auckland'
dahlia tuber
- Position: full sun
- Soil: fertile, humus-rich soil
- Rate of growth: average
- Flowering period: July to September
- Flower colour: red
- Other features: excellent cut-flowers
- Hardiness: half hardy (may need winter protection)
Near black stems, hold the vibrant red, single flowerheads above the dark purple-black foliage from midsummer. Long-flowering and prolific, the rich colouring of this exotic-looking dahlia will add real drama to the border. - Garden care: Dahlia tubers can be planted outside after frost, or started off in pots under glass in late winter to early spring. Plant them horizontally approximately 12cm deep, making sure the ‘eyes’ are uppermost. Allow enough room between each tuber so the plants can grow and spread to their full size without being over-crowded. 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.
Lobelia × speciosa 'Vedrariensis'
lobelia
Long tubular flowers on the upright spike
Verbascum phoeniceum 'Violetta'
purple mullein
Spires of papery purple blooms
Penstemon 'Raven'
beard tongue
Dramatic, deep purple, foxglove-like flowers
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