Gentiana True Blue
Gentiana True Blue
Gentiana True Blue ®
Plant is very healthy and strong and it shows new leaves (received on 13th June 2024). Hope it will flower next year. Highly recommend this shop.
Eliska (Czech Republic), 03/07/2024
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Description
'True Blue' Gentian is a new variety of hybrid gentian that is very blue, floriferous, and easy to grow in any moist soil. This perennial has a neat appearance, forming a regular clump adorned with rich, vibrant green foliage, and bears along its stems and at each node, flowers of an authentic gentian blue. From the middle of summer to the beginning of autumn, this gentian reveals its multiple funnel-shaped corollas, creating a dazzling display on the edge of a flowerbed or in a beautiful pot on the terrace. Attractive to bees and butterflies, its flowers are stunning in a vase.
The 'True Blue' Gentian is a very recent American horticultural creation. Like all gentians, it belongs to the Gentianaceae family. It is a deciduous perennial plant, with aerial vegetation that disappears in winter. Forming an upright but slightly spreading clump, this bushy variety is adorned with beautiful lanceolate leaves, shiny, measuring about 4 to 6 cm (2in) long, of a beautiful dark green colour, with a lighter central vein. With fairly rapid growth, it reaches about 60 cm (24in) in height and 50 cm (20in) in width. From July-August to September, numerous large flowers 5 cm (2in) in diameter bloom along the length of the stems, in the shape of trumpets, facing upwards. They bloom at the axils of the leaves and in terminal clusters. They only fully open in very bright sunlight. Each one has a corolla that widens into 5 lobes of a very bright blue, with no trace of violet. The throat of the flower is streaked with white and midnight blue.
The True Blue gentian is a perennial plant that is relatively easy to grow for a gentian, as it will adapt to a good, well-drained garden soil, even slightly alkaline. In the ground, it will ideally be placed in soil enriched with compost, remaining fresh and well-drained, on a wall, in a rockery, on a slope, on the edge of flowerbeds, or in a trough, in a mountain garden. It prefers sunny spaces but not too hot, or partial shade, where it can establish deep roots. This gentian can be combined, in a flowerbed or rockery, with snowdrops, botanical tulips, crocuses, Lewisia, dwarf conifers, corydalis, or even heucheras. It can be grown in pots without difficulty, following the same growing conditions.
The term Gentiana refers to Gentius, king of Illyria (present-day Albania) in the 2nd century BC, who, according to Pliny the Elder, discovered the medicinal and healing properties of the root of the yellow gentian.
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Gentiana True Blue in pictures
Flowering
Foliage
Plant habit
Botanical data
Gentiana
True Blue ®
Gentianaceae
Cultivar or hybrid
Planting and care
The True Blue Gentian should be planted in spring or autumn. When planting, between September and March it should be placed in garden soil enriched with compost, gravel, and humus-rich matter such as leaf compost. The presence of limestone in the soil or irrigation water is not a problem. The soil should be well-drained, but moist throughout the year. This plant, perfectly resistant to cold, does not appreciate hot climates and scorching summers. In spring, a contribution of fertiliser in the form of crushed horn or well-rotted manure will be welcome. A sunny or partially shaded site will be suitable. This hybrid Gentian will be planted in a 20 cm (8in) pot, in a mixture of potting soil and gravel. Repot every year, without disturbing the plant's main root.
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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