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Dwarf Larkspur Summer Blues Seeds - Delphinium grandiflorum
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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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Larkspur 'Summer Blues' is an adorable selection belonging to the renowned “Summer” series. It forms very compact, well-branched plants that displays loose sprays of single, sky blue blooms over attractive green foliage. Early-flowering and prolific, it is ideal for growing at the front of borders and in pots. Direct sow in spring in rich, cool soil, in a sunny, sheltered position.
Delphinium 'Summer Blues' is one of the many hybrids selected from D. grandiflorum, a short-lived perennial (often treated as an annual) that is native to the mountainous regions of China, Siberia, Mongolia and Japan. It self-seeds easily in light soil. This hardy, fast-growing variety forms a wide, dense, 30-35 cm clump in the space of a few months. The leaves are palmately divided or lobed, soft green in colour, topped with 30 cm tall floral stems in summer. Flowering takes place from June to August, even as early as July in warmer climates, repeat flowering in September. The simple, cup-shaped blooms are gathered on loose sprays and are a magnet to foraging insects. They are made up of 5 petals in an eye-catching shade of sky blue.
This unique Delphinium is ideal for smaller gardens. For a romantic touch, it can be used for underplanting old roses and Baby's Breath. The long-lasting, sky blue blooms make lovely bouquets, combining well with white, yellow, orange and pink. It is an excellent variety for growing in pots on the patio or balcony.
Flowering
Foliage
Plant habit
Safety measures
Botanical data
ingestion
Cette plante est toxique si elle est ingérée volontairement ou involontairement.
Ne la plantez pas là où de jeunes enfants peuvent évoluer, et lavez-vous les mains après l'avoir manipulée.
Pensez à conserver l'étiquette de la plante, à la photographier ou à noter son nom, afin de faciliter le travail des professionnels de santé.
Davantage d'informations sur https://plantes-risque.info
Sow the seeds of Delphinium Summer Blues directly outdoors, from April to May, in full sun, in a fertile, light, well-drained soil that has been previously prepared. Bury the fine seeds to a depth of 6mm (0.2 in) in small holes spaced 30cm (11.8 in) apart. Keep the soil moist by watering regularly, especially during dry periods. Germination usually takes 14 to 21 days. When the seedlings are large enough to handle, thin them out by planting only one plant every 15cm (5.9 in).
For earlier flowering, sow Delphinium seeds from August to October in 7.5cm (2.8 in) pots filled with good quality compost kept moist. Place the pots in a mini-greenhouse or inside a plastic bag at a temperature of 15-20°C until germination. Once the seedlings have developed, place them in a bright, but cooler location. Overwinter the plants in a cool, bright place protected from frost by watering them sparingly. Transplant them to their final location in the following spring. Water regularly until the plants are fully established.
Regularly remove faded flowers to encourage continuous flowering. Delphiniums prefer sunny locations protected from the wind, as well as a fertile soil rich in organic matter and well-drained. Excessively wet or dry soil is detrimental to the growth and flowering duration of the larkspur. Varieties derived from Delphinium grandiflorum are more resistant to diseases and pests than the large hybrids. They also tolerate heat better.
Sowing period
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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.