Cosmos x Dahlia Mexican Black
Cosmos x Dahlia Mexican Black
Cosmos x Dahlia Mexican Black
Cosmos - Dahlia Hybrid
Special offer!
Receive a €20 voucher for any order over €90 (excluding delivery costs, credit notes, and plastic-free options)!
1- Add your favorite plants to your cart.
2- Once you have reached €90, confirm your order (you can even choose the delivery date!).
3- As soon as your order is shipped, you will receive an email containing your voucher code, valid for 3 months (90 days).
Your voucher is unique and can only be used once, for any order with a minimum value of €20, excluding delivery costs.
Can be combined with other current offers, non-divisible and non-refundable.
This plant carries a 6 months recovery warranty
More information
We guarantee the quality of our plants for a full growing cycle, and will replace at our expense any plant that fails to recover under normal climatic and planting conditions.
Would this plant suit my garden?
Set up your Plantfit profile →
Description
The Cosmos x Dahlia Mexican Black is a curious tuberous plant, apparently harvested in Mexico, in a wild area. It is said to be the result of a cross-breeding between Cosmos atrosanguineus and Dahlia coccinea, with which it shares various morphological traits. This rare and original plant produces single, slightly fragrant flowers, 6 cm (2in) in diameter, made of a dark brown-purple collar of petals surrounding a beautiful golden yellow center. They bloom in late summer and autumn, above an elegant mound of dark green foliage. Not very hardy, it should be cultivated like a Dahlia, in full sun and in light soil.
The Cosmos x Dahlia Mexican Black is a herbaceous plant with tubers that is quite enigmatic, belonging to the aster family. It resembles more a Dahlia than a cosmos, by the smell of its foliage and its mode of growth. Mainly obtained through vegetative propagation, it develops from a fleshy tuber sensitive to frost and quickly forms a clump of 40 to 50 cm (16 to 20in) in all directions for the foliage, 70 to 80 cm (28 to 32in) for the flowers. The foliage, with few lobes, cut into narrow lobes, somewhat resembles that of peonies. It consists of dark green leaves, slightly tinged with a dull purple, and remains low. The floral stems, tinged with purple-brown, appear in August-September, and until October if faded flowers are regularly removed. The flowers, grouped in heads, consist of slightly crumpled ligulate florets of brownish-purple colour on the periphery and a heart of tubular florets of golden yellow. These heads give off a slight chocolate aroma, especially in hot weather. According to recent molecular studies conducted in 2012, the dark color of the heads is not attributable to cross-breeding with Cosmos atrosanguineus, as it is found in at least 14 Dahlia cultivars.
The Cosmos (x) Dahlia Mexican Black is a little-known variety in France, an accent plant that will not go unnoticed in the ornamental garden at the end of the season. It is sublime when paired with gray and silver foliage. In beds or in pots, it will wonderfully accompany artemisias, bear's ears, or sea cineraria. The warm tone of its flowers enhances pastel colours like the pink or blue of asters or the azure of 'Indigo Spires' sage. It stands out against the acidic green foliage of bipinnate cosmos or Alchemilla mollis.
Flowering
Foliage
Plant habit
Botanical data
Cosmos x Dahlia
Mexican Black
Asteraceae
Cosmos - Dahlia Hybrid
Cultivar or hybrid
Planting and care
Plant Cosmos x Dahlia Mexican Black in spring, once the frosts have passed, in a light, humus-rich and well-drained soil. It prefers sunny positions, which will enhance its fragrance, but tolerates partial shade. Once well established, it withstands drought and heat. It can be grown like a Dahlia, by lifting the tubers before the frosts and storing them in a cool place. It also performs very well in pots. This cultivation method allows the pots to be stored during the winter season in a cool and bright place. Under these conditions, it will flower for a good part of the year. Regularly remove faded flowers to encourage flowering renewal.
Planting period
Intended location
Care
Planting & care advice
This item has not been reviewed yet - be the first to leave a review about it.
Recently viewed products
Haven't found what you were looking for?
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).
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.