Dahlia 'Rip City'
semi-cactus dahlia
Flowering from July until the first frosts, Dahlia ‘Rip City’ is a stunning semi-cactus dahlia, with fully double, reddish-black blooms with long, narrow, pointed petals and black centres that recurve for more than half their length and have a ruffled appearance.
Strong stems offer excellent cut flower opportunities. Try this tuberous perennial in bold groups in a sunny, sheltered border. With an ultimate height of around 1m (3ft), it works well nestled in front of Calamagrostis cultivars, such as 'Karl Foerster'.
Strong stems offer excellent cut flower opportunities. Try this tuberous perennial in bold groups in a sunny, sheltered border. With an ultimate height of around 1m (3ft), it works well nestled in front of Calamagrostis cultivars, such as 'Karl Foerster'.
How to care for Dahlia Rip City:
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 (5in) 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 overcrowded.
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.
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.
Flowering period:
- Jan
- Feb
- Mar
- Apr
- May
- Jun
- Jul
- Aug
- Sep
- Oct
- Nov
- Dec
Eventual height:
1.1m
Eventual spread:
1m
Position:
Full sun
Rate of growth:
Fast-growing
Soil:
Moderately fertile, moist but well-drained soil, or peat-free general purpose compost
Hardiness:
Borderline hardy (will need protection in winter in colder areas)
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This bulb dies back after flowering each year and enters a period of rest ahead of regrowth the following season.
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Humans/Pets: Ornamental bulbs - not to be eaten
1 × tuber
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