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Garden speedwell Seeds - Veronica longifolia
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Dispatch by letter from €3.90.
Delivery charge from €5.90 Oversize package delivery charge from €6.90.
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This plant carries a 6 months recovery warranty
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We guarantee the quality of our plants for a full growing cycle, and will replace at our expense any plant that fails to recover under normal climatic and planting conditions.
Seed-only orders are dispatched by sealed envelope. The delivery charge for seed-only orders is €3.90.
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Veronica longifolia, also known as garden speedwell or longleaf speedwell, is a very resistant perennial plant that blooms profusely in the summer and that is well adapted to wet, clay soils. In the summer, its long, dense looking spikes, thickly set with tiny, bright blue flowers, rise above a lush foliage, animated with the incessant flight of butterflies. In flower beds or at the edge of water features, it forms a huge mass of blooms which also attracts the eye with its beautiful autumn foliage. Very hardy, it can be grown without difficulty in any good quality garden soil, in deep, moist soil, in the sun or in partial shade. Its flowers are also very pretty in bouquets.
Veronica longifolia is a herbaceous plant of the family Plantagenaceae which is found in Northern and Central Europe and in Asia. Forming mounds that are quite large that bear erect stems, it sometimes grows to over 1 m in the wild and hybridizes easily with Veronica spicata. It is a plant for wet, clay, lime soils.
Longleaf speedwell's growth emerges from the ground in spring, forming an upright clump of leafy stems, averaging 90 cm in height and 50 cm in width. Its leaves may be opposite, but are often verticillate (inserted in whorls at regular intervals) in groups of three or four. Fairly narrow and lanceolate, 6 to 12 cm long and equipped with a short stalk, the leaf blade is deeply toothed and pure green in colour. It blooms in June-July. The inflorescences are very dense, upright racemes (clusters) that look like long, narrow spikes, densely set with very small flowers. They are tubular, intense blue and have four petals and two lighter coloured, protruding stamens. The blooms are melliferous and nectar-rich and give way to fruits in the form of spineless, heart-shaped capsules. The seeds self-seed spontaneously in the garden in wet soil.
Very easy to grow in ordinary, moist soil, this speedwell blends well with a variety of plants, especially plants for wet banks and produces beautiful summer displays in large flowerbeds and on the banks of a pond. Plant it with purple loosestrife, boneset, meadow-rues, meadowsweet (Filipendula) and Euphorbia palustris, for example. For a wilder looking style of garden, this elegant perennial forms a very successful association at the back of beds, with coneflowers and medium sized-grasses: pennisetum, compact miscanthus... Its flowers make for beautiful bouquets, along with white, pink or red roses, hydrangeas, buttercups, asters.
Flowering
Foliage
Plant habit
Botanical data
Sowing Veronica longifolia : February to June or September to October.
Sow seeds on the surface of a lightly packed, moist, special seed starting mix, in pots or trays. Seeds should be sown thinly. Do not cover very small seeds, but tightly press into the compost. Place a saucer underneath your pots or trays and water by filling the saucer with water. Place in a greenhouse or heated room, ideally between 13 and 16 °C. The compost should remain moist but should not be continuously wet. Germination takes 30 to 40 days. Move the seedlings to a cooler place after emergence.
Seedlings can be slow to grow. Prick out each plant once it has developed its first true leaves and transplant it into 7.5 cm diameter pots containing well-drained compost. Grow your seedlings in frost-free conditions until they are large enough to be planted outside.
Gradually acclimatize them to outdoor conditions for 10 to 15 days before planting out, once all risk of frost has passed. Plants sown in the autumn will spend the winter in frost-free conditions and will be planted out the following spring. Keep a distance of 30 to 60 cm between each plant.
Cultivation : Veronica longifolia is a reliable perennial although it does prefer a rich, clay soil, that tends to be alkaline (calcareous), deep and that never dries out. It likes damp environments and the proximity of water. It grows and flowers best in sunny conditions. Veronica longifolia can be planted out almost all year round in the garden, outside periods of frost and summer drought. Cut faded flower spikes as this will encourage repeat blooms. Being a rather gluttonous perennial, adding compost to the base of the plant every spring will help maintain its vigor. Do not use too much nitrogen fertilizer which will weaken the plant and make the stems bend and fall more easily. In spring, cut the plant down to its base. New foliage will emerge directly from the underground roots in the spring.
Sowing period
Intended location
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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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The flowering period indicated on our website applies to countries and regions located in USDA zone 8 (France, the United Kingdom, Ireland, the Netherlands, etc.)
It will vary according to where you live:
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 planting period indicated on our website applies to countries and regions located in USDA zone 8 (France, United Kingdom, Ireland, Netherlands).
It will vary according to where you live:
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.