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Diascia Trinity Sunset

Diascia x barberae Trinity Sunset
Twinspur

5,0/5
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Mini plants well distributed, superb colour, I can't wait to see them this summer.

Marie-Françoise, 22/04/2022

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This plant carries a 6 months recovery warranty

More information

Value-for-money
A rather compact and bushy variety, resistant to rain and heat, that bears a profusion of very attractive brick-pink flowers, of good size for a diascia. They bloom all along the stems, from spring until the first frosts. A perennial, but not very hardy, it is grown as an annual in summer compositions. Well-known for its use in hanging baskets and containers, diascia is also very attractive in rockeries or low borders.
Flower size
2 cm
Height at maturity
25 cm
Spread at maturity
30 cm
Exposure
Sun
Hardiness
Hardy down to -9°C
Soil moisture
Moist soil
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Best planting time April
Recommended planting time March to May
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Flowering time June to November
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Description

Diascia 'Trinity Sunset' is a new generation, both floriferous, enduring and rain resistant. With a rather compact and bushy habit, and superb brick pink flowers, larger than those of other varieties, the plant blooms tirelessly along its stems, from May-June to October, despite the heat and bad weather. This perennial plant, not very hardy, often grown as an annual, loves the sun and light soils. Well known for its use in hanging baskets and containers, it is also very attractive in rockeries or low borders.

 

Diascia 'Trinity Sunset' belongs to the family of Scrophulariaceae. It is a very recent hybrid cultivar derived from Diascia barberae, native to southern Africa, Lesotho and KwaZulu-Natal. This plant has a very branched habit, forming a very neat little bush even in the rain, about 30cm (11.8in) in all directions. Flowering begins in spring and only ends with the first frosts. It produces clusters of flowers with sunset shades, with a large labellum, extended downwards by two spurs. These flowers form in the axil of the leaves, along almost the entire length of the stems. The foliage, deciduous to semi-evergreen in winter depending on the climate, is composed of small, cordate, dentate-edged leaves, about 2cm (0.8in) long, dark green in colour.

 

Diascia 'Trinity Sunset', due to its very low hardiness, is grown as an annual plant in our latitudes. It can be used in the ground and in pots, alone or mixed with other annuals, as well as with low-growing plants such as Lithodora, silver baskets, and aubrietas. Given its bushy and dense habit, it will look good in a border, flower bed, ground cover, rockery, planter, or hanging basket, or even on walls. In a floral composition, it can be associated for example with mini-petunias, Nemesias, lobelias, Bacopas, and Isotomas.

Note: Attention, our young plants in mini-pots are professional products reserved for experienced gardeners: upon receipt, transplant and store them under shelter (veranda, greenhouse, frame...) at a temperature above 14C° for a few weeks before being installed outdoors once the risk of frost has definitively passed.

 

Diascia Trinity Sunset in pictures

Diascia Trinity Sunset (Flowering) Flowering
Diascia Trinity Sunset (Plant habit) Plant habit

Flowering

Flower colour orange
Flowering time June to November
Inflorescence Cluster
Flower size 2 cm

Foliage

Foliage persistence Semi-evergreen
Foliage colour dark green

Plant habit

Height at maturity 25 cm
Spread at maturity 30 cm
Growth rate fast

Botanical data

Genus

Diascia

Species

x barberae

Cultivar

Trinity Sunset

Family

Scrophulariaceae

Other common names

Twinspur

Origin

Cultivar or hybrid

Planting and care

Install the Diascia barberae 'Trinity Sunset' in open ground or in pots, after the end of frost, in a fertile soil to support the flowering, moist to occasionally dry, humus-rich, perfectly drained. This plant dreads stagnant humidity. The further south you go, the more the plant fears the scorching afternoon sun and dry soils. It is useful to pinch the terminal shoots to accentuate the bushy habit. Prune the faded stems after flowering. This diascia is hardy up to about -6°C, in a perfectly drained soil. In winter, outside mild climate regions, it is preferable to shelter this tender plant in a cold greenhouse or unheated conservatory. Potted plants will need regular watering and feeding with a fertilizer for flowering plants.

Planting period

Best planting time April
Recommended planting time March to May

Intended location

Suitable for Rockery
Type of use Edge of border, Container
Hardiness Hardy down to -9°C (USDA zone 8b) Show map
Ease of cultivation Beginner
Planting density 5 per m2
Exposure Sun
Soil pH Neutral
Soil type Silty-loamy (rich and light)
Soil moisture Moist soil, Well-drained, fertile.

Care

Pruning instructions Prune the withered stems after flowering. Optionally pinch the tips of the growing stems to further enhance the upright and compact habit of the young plant.
Pruning Pruning recommended once a year
Pruning time August to September
Disease resistance Very good
Overwinter Needs to be stored
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