Tradescantia Ocean Blue - Spiderwort
Tradescantia Ocean Blue - Spiderwort
Tradescantia Ocean Blue - Spiderwort
Tradescantia x andersoniana Ocean Blue
Spiderwort, Spider lily
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Description
Tradescantia (Andersoniana Group) 'Ocean Blue' is a selection of Virginia spiderwort with charming and delicate sky-blue flowers. Delicately infused with powdery light blue, its flat flowers are slightly marked with darker blue towards the centre and on its anthers, punctuated with sun yellow. They bloom for long weeks in summer, above a clump of narrow and pointed, dark green leaves. Hardy and easy to grow in moist soil, this perennial brings a refined touch to partially shaded borders and flower beds in the garden, or along the edge of a pond, with its flowers seemingly placed on the foliage. It also thrives in pots.
'Ocean Blue' spiderwort is a horticultural hybrid of Tradescantia with origins in both Americas (Tradescantia ohiensis, T.subaspera, T virginiana). All these plants belong to the commelinaceae family. It is a herbaceous perennial with above-ground vegetation emerging in spring and disappearing in winter forming a dense clump about 60 cm (24in) tall and spreading about 50 to 60 cm (20 to 24in). Its glossy dark green foliage is similar to grass with single, long and narrow leaves, tapering to a point, arching and sheathed on a tubular stem. Flowering begins in June and lasts all summer if the soil remains moist. It takes the form of flat flowers, composed of 3 wide petals, with contrasting yellow stamens, simple and pure, but ephemeral. They open in pairs carried in small bouquets or terminal cymes at the top of stiff floral stems. Each flower only 'lives' for a few hours, but they continually renew above the foliage.
The 'Ocean Blue' Virginia spiderwort is easy to grow in moist to wet soil, preferably humus-bearing. It thrives in partial shade, displaying its delicate colour to its full potential, which is too washed out in full sun. It is happy on a bank and appreciates the company of Persicaria, Carex, tiarellas, and Hostas, as a contrast of foliage. In any moist soil, shaded rockery, woodland, or border, its pastel flowering illuminates shady areas, it looks stunning when combined with other perennials with blue flowers such as Symphytum azureum. It makes a good ground cover and grows well in pots or hanging baskets, in partial shade, with regular watering.
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Flowering
Foliage
Plant habit
Botanical data
Tradescantia
x andersoniana
Ocean Blue
Commelinaceae
Spiderwort, Spider lily
Cultivar or hybrid
Planting and care
Easy to grow and maintain, you can plant Tradescantia (Andersoniana Group) 'Ocean Blue' in humus-bearing, moist to wet, slightly acidic, neutral or slightly alkaline soil. This plant prefers a semi-shaded exposure, especially in the south. In full sun, regular watering will be essential. To ensure continuous flowering until the frost period, cut off the faded flowers. The foliage can be cut down to the ground in November. Young shoots are sensitive to damage caused by snails and slugs, so protect them. When the foliage starts to develop brown spots, it is better to renew the plant, as it is gradually degenerating. This plant does not tolerate root competition from sucker-forming or stoloniferous perennials.
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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