Verbena Polaris
Verbena Polaris
Verbena Polaris
Verbena Polaris
Verbena Polaris
Verbena rigida Polaris
Slender Vervain
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This plant carries a 12 months recovery warranty
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Description
Verbena Polaris is a hardy, floriferous, drought-resistant perennial plant. This more compact, bushy cousin of the Buenos Aires Verbena thrives in the same growing conditions, but its flowers are more pastel, in pinkish-blue to mauve. It blooms from summer to autumn in sunny locations, in containers, flower beds, and sunny rock gardens. It should be planted in well-draining soil, pruned in late autumn, and provided with a thick layer of dry mulch to protect it from severe frost and help it survive winter.
Verbena Polaris is native to South America, specifically northeastern Argentina and the pampas of Brazil and well-adapted to dry summer climates and coastal regions exposed to salt spray. It belongs to the Verbenaceae family. It is a perennial plant with fleshy roots and rapid growth, allowing it to reach maturity in just a few months. It is bushy and branched from the base, forming a clump 50 to 60 cm (20 to 24in) tall and 35 cm (14in) wide. Its long-lasting flowering period extends from June to October. The flowers of the Polaris cultivar are light and bright, arranged in flat, mauve-blue corymbs, and borne on square, rigid, and branched stems. The foliage consists of narrow, rough, and toothed leaves.
Polaris verbena thrives in sunny, well-draining, even rocky soil. It is moderately hardy (down to -10°C (14°F)) and quite short-lived. If the growing conditions are favourable, this will be largely compensated by its ability to self-seed, without becoming invasive. It is a nectar-rich plant that will delight butterflies. It is easy to grow and ornamental, but still relatively unknown. It will work well in a seaside or dry garden alongside grasses, shrubby salvias, or even mass-planted with California Poppies or Golden Agastache for a captivating, contemporary effect. It can also be grown in pots, but don't forget to water it in summer.
Our advice: Also combine it with annuals in flower beds and hanging baskets.
Verbena Polaris in pictures
Flowering
Foliage
Plant habit
Botanical data
Verbena
rigida
Polaris
Verbenaceae
Slender Vervain
South America
Planting and care
Verbena 'Polaris' should be planted from March to June in the sun. It is a good plant for flower beds and containers. Though perennial in its original climate, it often struggles to withstand temperatures below -8 °C (17.6°F) and does not tolerate excessive moisture in winter, so it is often grown as an annual. It will be more cold-resistant when planted in a rock garden or a gravel bed in a Mediterranean climate.
In containers: Use general-purpose, peat-free compost for flowering plants. Water regularly, allowing the substrate to dry out between waterings, and feed every 15 days.
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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