Sunflower Inca Empire Mix Seeds - Helianthus annuus
Sunflower Inca Empire Mix Seeds - Helianthus annuus
Helianthus annuus Inca Empire Mix
Sunflower, common sunflower
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Description
Helianthus annuus 'Inca Empire Mix' is a blend of various varieties of decorative sunflowers, carefully chosen for their vibrant colours and long flowering period. Throughout the summer, these flowers with their varied shapes and vibrant colours enhance the garden and enrich bouquets. They are also valuable for pollinating insects. Easy to sow and grow in well-nourished and moist soil, in full sun. This tall annual plant can be sown from March to April, in pots, or directly in the ground between May and June after the last frost.
Helianthus annuus is the famous sunflower cultivated on a large scale for the oil extracted from its seeds. This tall annual plant from the Asteraceae family, domesticated for a long time by humans, has a controversial origin, but it is native to the American continent.
The 'Inca Empire Mix' sunflower blend is composed of several horticultural sunflower varieties reaching a height of 2 to 3 m and a spread of 0.40 to 0.60 m. Flowering begins in July-August and continues until September-October, if you take care to remove faded flowers. The flowers are in heads measuring 12 to 20 cm in diameter. Under optimal conditions, it takes about 8 weeks from sowing to the start of flowering. The flower stalks are strong and well-branched. The foliage consists of dark green, simple, cordate (heart-shaped), toothed leaves, alternately arranged, sometimes opposite at the base. They are attached to the stem by a petiole and have a rough texture.
Its ease of cultivation and large, easy-to-germinate seeds are very popular with children who are getting started in gardening. The 'Inca Empire Mix' sunflowers are particularly suitable for ornamental seasonal beds, but also for decorating the vegetable garden where they attract many beneficial animals. They only require sunlight and soil that is not too dry to thrive effortlessly. They have a rustic appearance and as such, they blend well in slightly wild areas of the garden, alongside cosmos, sainfoin, perennial sweet peas, scabiosa, gaillardia, and more.
Before flowering, the plant optimises its growth by following the path of the sun. This phenomenon, called heliotropism, has given rise to some of its common names: Héliotrope, Tournesol, Sunflower...
To enjoy your cut sunflowers for longer, follow these tips: Cut the flowers in the morning just after they have opened. Use a clean knife. Remove the leaves from the bottom, leaving only 2 or 3 leaves below the flower. Change the water in the vase with fresh water every day.
An ecological asset: Throughout the summer, the nectar-rich flowers of sunflowers attract pollinating insects and butterflies to your garden. A good way to improve the ecosystem and promote fruit and vegetable production in your vegetable garden.
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Flowering
Foliage
Plant habit
Botanical data
Helianthus
annuus
Inca Empire Mix
Asteraceae
Sunflower, common sunflower
Cultivar or hybrid
Planting and care
Sunflowers can be sown:
. Either in March-April, in pots under cover, to prepare young plants that can be placed in your flower beds after the last frost.
. Or from May to June, after the frost, directly in place. In a sunny spot in your garden. To enjoy beautiful fresh flowers all season, we recommend staggering your sowings as much as possible.
Sow the 'Inca Empire Mix' Sunflower seeds from March to April in pots in groups of 2 at a depth of 1 cm. Use a good quality potting soil sieved on the surface to bind the seed to its substrate. Before sowing, lightly tamp down the soil with a board. Cover the seeds by sprinkling soil on top or using vermiculite, lightly tamp down and water copiously with a fine rain. Place your pots in the light, without direct sunlight, at a temperature of 20°C to 25°C. Lower the temperature at night to 17°C to create a beneficial alternation for germination. The seeds will take 10 to 15 days to germinate. Keep the soil moist, but not excessively during growth.
20 days after the appearance of the young plants, remove the weaker shoot to keep only one per pot. To promote branching of the main stem, you can cut the terminal bud when the plant has developed its fifth leaf.
15 days before their final placement, start gradually acclimatising them to a temperature of 15°C.
At the end of May or the beginning of June, the temperature will be warm enough in the garden to plant your young plants. Choose a sunny location. Add a good shovelful of compost to each planting hole. Space your plants 0.50 to 0.60 m apart.
The vigorous growth of the Sunflower will require regular watering. Once the plant has reached about 1m, you can stop watering and let it rely on rainfall even if it is scarce.
It takes 84 days between sowing and flowering.
Protect your seedlings from attacks by snails and slugs, which are fond of these young plants. Sowing chives near your sunflowers can keep aphids away.
Sowing period
Intended location
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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