Veronica longifolia Collection - Longleaf Veronicas
Veronica longifolia Collection - Longleaf Veronicas
Veronica longifolia sp., Charlotte, Marietta
Speedwell
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Description
The Veronica longifolia collection, dedicated to Long-leaved Veronicas, includes three different varieties: the species called Veronica longifolia, accompanied by its varieties 'Charlotte' and 'Marietta'. These speedwells differ in the colour of their melliferous flowers, their height, and their flowering period. They are very hardy perennial plants with evergreen foliage. They thrive in rich and moist soil. They are beautiful border plants and excellent candidates for enhancing wet and clayey areas.
The collection consists of:
x 1 Veronica longifolia: this is the botanical species with intense blue-violet flowers, flowering from June to July. Reaching a height of about 70 cm (28in), its floral spikes form a beautiful contrast to its dark green persistent leaves.
x 1 Veronica longifolia 'Charlotte': this variety is distinguished by its delicate white flowers and moderate height, 60 cm (24in). Its flowering period extends from June to August. Beautiful green foliage, highlighted by a fine white border.
x 1 Veronica longifolia 'Marietta': this speedwell bears clear tropical blue flowers between July and August. It reaches a height of 40 to 50 cm (16 to 20in).
These Long-leaved Speedwells should be planted in spring or autumn in rich soil that remains moist in summer. We recommend planting Veronica longifolia 'Charlotte' in the foreground, while the species and the 'Marietta' varieties can be placed slightly behind. Allow for 4 to 5 plants per square metre, with an approximate spacing of 60 cm (24in) between each plant.
Create beautiful summer displays with these perennial Speedwells, especially on the banks of a pond. Plant them in front of a combination of Thalictrum delavayi 'Hewitt's Double' with double flowers, Eupatorium coelestinum with mauve pompoms, and Filipendula rubra 'Venusta', a queen-of-the-meadow offering magnificent pink floral spikes. For a wilder style, you can combine these perennials in the background of a border with Miscanthus sinensis 'Gracillimus', which will bring a touch of elegance with its fine leaves and light inflorescent plumes.
Flowering
Foliage
Plant habit
Botanical data
Veronica
longifolia
sp., Charlotte, Marietta
Plantaginaceae
Speedwell
Veronica septentrionalis, Veronica maritima, Veronica exaltata, Pseudolysimachion longifolium
Cultivar or hybrid
Planting and care
The Veronica longifolia is an easy-going perennial that prefers a rich and light soil with a basic (limestone) tendency. It enjoys moist settings and the proximity of water, but requires fairly light, not too compact soil. It will develop and flower best in sunny exposures. The Veronica longifolia can be planted in the garden almost any time of the year, except during periods of frost and summer drought. Cut the faded flower stems to promote new flowering. Adding compost at the base of the plant every spring will gives it vigour. Avoid using over-nitrogen-rich fertilisers as they will weaken the growth and produce stems more prone to bending. In spring, prune the plant at the base. New foliage will emerge from the underground roots in spring.
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).
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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.