Thunbergia alata Collection - Black-eyed Susans
Thunbergia alata Collection - Black-eyed Susans
Thunbergia alata Collection - Black-eyed Susans
Thunbergia alata orange aux yeux noirs, jaune aux yeux noirs
Black-eyed Susan
They made quite an impression when climbing on the acer pseudo-platanus with purple leaves!
Francisca, 23/08/2021
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This plant carries a 12 months recovery warranty
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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.
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Description
Thunbergia alata, or more poetically Black-eyed Susan, is an annual climbing plant with charming orange and bicoloured flowers with black centres.
With rapid growth, your young plant will reach 2m (7ft) in just one summer, and will bloom continuously until September.
It is suitable for cultivation in both pots and open ground, in a sunny site. An incessant but light climber, it pairs well with perennial climbing plants and can also be used as ground cover.
We often associate it with summer flowering bulbs such as gladioli: it wraps itself around the leaves and blooms in the most unlikely places, adding a touch of whimsy to even the most rigid flower beds.
Young plants measuring 4 to 8 cm, in cases of 5 small plugs 3.6 cm in diameter and 4 cm high. Our plants are at least eight weeks old and strong enough to be planted in open ground.
Note: Please be aware that our young plug plants are professional products intended for experienced gardeners. Upon receipt, transplant and store them in a sheltered place (veranda, greenhouse, cold frame) at a temperature above 14C° for a few weeks, before planting them outdoors once all risk of frost has passed.
Plant habit
Flowering
Foliage
Botanical data
Thunbergia
alata
orange aux yeux noirs, jaune aux yeux noirs
Acanthaceae
Black-eyed Susan
Cultivar or hybrid
Planting and care
You can plant your Thunbergia Alata in the ground or in a pot. In the ground, it is imperative to wait until the last frost has passed (Black-eyed Susans cannot tolerate frost and do not tolerate temperatures below 8° (46.4°F) well). In the meantime, you can pre-cultivate them in a pot in a warm and bright place to accelerate their growth. Plant in a full sun or partial shade. They need a light and humus-rich soil. They tolerate short periods of drought quite well, but will need regular watering during hot summer weather to flower well. In pots, they need to be watered very regularly. Very floriferous and fast-growing, they reach 2m (7ft) in one summer. Remember to provide support if using them as climbers. Usually grown as annuals, they are actually very fragile perennials: by bringing them indoors in September, you can extend their flowering into autumn and winter.
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).
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 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.
The planting period indicated on our website applies to regions in USDA Zone 9a (East Coast and Midlands: Dublin, Wexford, Waterford, Kilkenny, Portlaoise). It will vary depending on where you live:
- On the west coast and in the north-west (Galway, Limerick, Sligo, Donegal, Westport), delay planting by 1 to 2 weeks in spring and bring it forward by 1 to 2 weeks in autumn compared to the dates given, preferably choosing periods without strong winds.
- In the inland hills and plateaus (Wicklow Mountains, Macgillycuddy’s Reeks, Connemara, Killarney), it is best to plant in spring (April–May) or autumn (September–October), avoiding periods of waterlogged soil in winter and strong winds, which pose the main risk to newly planted trees in these areas.
The flowering period indicated on our website applies to regions in USDA Zone 9a, such as the East Coast and Midlands, including Dublin, Wexford, Waterford, Kilkenny and Portlaoise.
This will vary depending on where you live:
- On the west coast and in the northwest (Galway, Limerick, Sligo, Donegal and Westport), it will be delayed by one to two weeks compared to the given dates, due to stronger Atlantic winds and less spring sunshine.
- In the inland hills and plateaus (the Wicklow Mountains, the Macgillycuddy's Reeks, Connemara and Killarney), flowering will be delayed by two to three weeks. Flowering mainly occurs between May and July, with the limiting factors being less frost and more of the excessive humidity, strong winds and lack of sunshine that are characteristic of these areas.
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