Dahlia Titan Lighthouse - Giant flowered dahlia
Dahlia Titan Lighthouse
Dahlia Titan Lighthouse
Dahlia
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Description
Dahlia Titan Lighthouse is a giant decorative dahlia with huge flowers in apricot orange, touched with yellow at the centre. Very double, very colourful, very large, they are the stars of summer displays and cut flower arrangements. It is vigorous and floriferous, so place it at the back of a border, in a cutting garden or in a large container on a sunny patio.
From the Asteraceae family, 'Titan Lighthouse' is a horticultural cultivar classified in the Decorative Group, Giant type. A Dutch selection attributed to Peter Komen, this cultivar belongs to the 'Titan' series, which groups together giant decorative dahlias in various colours.
Modern dahlias derive from species native to the highlands of Mexico and Central America.
Over the course of one season, the plant forms an upright, branched clump, reaching 1 m to 1.20 m in height and 60–80 cm in width in the ground; in a large pot (40–50 cm in diameter), expect 70–90 cm in height, with slightly smaller flowers. The hollow, green to slightly purplish stems generally require staking. The foliage is medium green, the leaves have ovate-lanceolate, serrated, 8 to 15 cm long leaflets.
The root system consists of fleshy tuberised roots forming a compact crown at the collar. The fully double flower heads measure 20–25 cm in diameter; they are composed of broad, spatulate, regularly overlapped ligules or "petals", of apricot orange colour, with a more yellow base and lighter tips; the central disc is completely hidden. The plant flowers from July to October.
Plant dahlia Titan Lighthouse in full sun in deep, fertile and well-drained soil, mulched to retain moisture; water regularly in summer and stake from the start. Place it at the back of a border with warm colours, for example with Pennisetum alopecuroides Cassian or Calamagrostis Karl Foerster, these grasses will lighten its voluminous flowering. You can associate it with dahlias Café au Lait, David Howard or Penhill Watermelon. Store the tubers after the first frosts and keep them in a dry, frost-free place (around 5–8 °C).
Long appreciated in Mexico for their edible tubers rich in inulin, dahlias reached Europe at the turn of the 18th and 19th centuries. They have become staples of gardens and flower shows.
Plant habit
Flowering
Foliage
Botanical data
Dahlia
Titan Lighthouse
Asteraceae
Dahlia
Cultivar or hybrid
Planting and care
Plant the decorative giant dahlia 'Titan Lighthouse' as soon as the last frosts have passed. For a generous flowering, plant the tubers in full sun in rich, moist, well-drained soil. Stagnant moisture, on the other hand, would encourage the tubers to rot. Add compost and sand to the soil if necessary. Work the soil deeply and enrich it, for example, with ground horn or dried blood. Place your tuber and crumble the soil well to fill in without air pockets. Your dahlia should be covered with about 6 cm of soil. After planting, water once generously, then repeat this watering regularly for the first 6 weeks to help with rooting.
As soon as it is established, think about staking. If the situation is not sheltered, a little windy (not too much if possible) or if it cannot lean on dense, sturdy neighbours, you will need to support it. You can also pinch it out as it develops to encourage branching. Remove faded flowers to allow the next ones to develop.
Dahlias are sensitive to cold, so they must be overwintered. In November, the first frosts blacken the foliage; this is the time to lift them. Dig up the tubers carefully. Remove as much soil as possible. Allow the foliage to dry so that the tubercles can replenish their reserves. Then cut the stems to 10 cm. Spread your tubers out in a crate on newspaper. Store them frost-free in a dry, cool, dark place, such as a frost-free garage or an attic. In southern regions, near the coast, which experience only a few days of frost per year, it is possible to leave them in place. In this case, simply cover the ground with a mulch of leaves or straw as protection.
Planting period
Intended location
Care
Planting & care advice
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Hardiness is the lowest winter temperature a plant can endure without suffering serious damage or even dying. However, hardiness is affected by location (a sheltered area, such as a patio), protection (winter cover) and soil type (hardiness is improved by well-drained soil).
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The flowering period indicated on our website applies to countries and regions located in USDA zone 8 (France, the United Kingdom, Ireland, the Netherlands, etc.)
It will vary according to where you live:
- In zones 9 to 10 (Italy, Spain, Greece, etc.), flowering will occur about 2 to 4 weeks earlier.
- In zones 6 to 7 (Germany, Poland, Slovenia, and lower mountainous regions), flowering will be delayed by 2 to 3 weeks.
- In zone 5 (Central Europe, Scandinavia), blooming will be delayed by 3 to 5 weeks.
In temperate climates, pruning of spring-flowering shrubs (forsythia, spireas, etc.) should be done just after flowering.
Pruning of summer-flowering shrubs (Indian Lilac, Perovskia, etc.) can be done in winter or spring.
In cold regions as well as with frost-sensitive plants, avoid pruning too early when severe frosts may still occur.
The planting period indicated on our website applies to countries and regions located in USDA zone 8 (France, United Kingdom, Ireland, Netherlands).
It will vary according to where you live:
- In Mediterranean zones (Marseille, Madrid, Milan, etc.), autumn and winter are the best planting periods.
- In continental zones (Strasbourg, Munich, Vienna, etc.), delay planting by 2 to 3 weeks in spring and bring it forward by 2 to 4 weeks in autumn.
- In mountainous regions (the Alps, Pyrenees, Carpathians, etc.), it is best to plant in late spring (May-June) or late summer (August-September).
The harvesting period indicated on our website applies to countries and regions in USDA zone 8 (France, England, Ireland, the Netherlands).
In colder areas (Scandinavia, Poland, Austria...) fruit and vegetable harvests are likely to be delayed by 3-4 weeks.
In warmer areas (Italy, Spain, Greece, etc.), harvesting will probably take place earlier, depending on weather conditions.
The sowing periods indicated on our website apply to countries and regions within USDA Zone 8 (France, UK, Ireland, Netherlands).
In colder areas (Scandinavia, Poland, Austria...), delay any outdoor sowing by 3-4 weeks, or sow under glass.
In warmer climes (Italy, Spain, Greece, etc.), bring outdoor sowing forward by a few weeks.