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Helianthus annuus 'Earthwalker'

Sunflower, Branching Sunflower

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Helianthus annuus 'Earthwalker'

Sunflower, Branching Sunflower
£1.55

Availability: In stock

Packet Size:2 grams
Average Seeds:75 seeds
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Description

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Throughout 2015, the Royal Horticultural Society (RHS) has been working with Fleuroselect, the international organisation for the ornamental plant industry. More than 130 new and existing Helianthus cultivars have been raised in trial rows, containers and display beds in a wide variety of flower colours, forms and sizes.
In a press release Fleuroselect explained that the trial clearly shows the enormous diversity in garden sunflowers ‘from the tall varieties which are favourites with children to the intermediate varieties for borders and landscaping, to the compact growing cultivars for pots and patio. It also includes the professional items for cut-flower production. The trial has been a tremendous hit with the visiting public who are invited to pick their own winner for the People’s Choice award.’
At the end of the season the RHS sunflower forum will be announcing which varieties are eligible for the Award of Garden Merit (AGM). The forum, consisting of a dozen or so professionals with a wealth of knowledge and experience have made four visits during the flowering season. Evaluating hundreds of blooms, they will have the tough job of selecting out the best for garden performance. We should expect to see a lot of RHS Awards of Garden Merit shortly.

Helianthus annuus 'Earthwalker' is an extraordinary sunflower. It features an intoxicating mixture of rich orange, bronze, deep terracotta and chocolate petals with dark centres.
The strong main stems each produce multiple branches which are both ideal for cutting and are ideal for the border displays
Bees and butterflies are enamoured by the Earthwalker. So too are hungry gardeners: the green buds that appear before the flowers are a culinary delight when slowly cooked with melted butter.
For those that can’t bear to sacrifice a single flower, wait until the end of the season and toast the seed kernels for a healthy snack, packed with protein, vitamins and minerals.

Helianthus annuus 'Earthwalker' is a Fleuroselect Award Winner.



Sowing Indoors:
Start indoors as early as February or March, to germinate in about 10 days at 60 to 65°F and plant out in April or May. Use 7.5cm (3in) pots and a good sowing compost. Sow one seed 2.5mm (1in) deep per pot. Water and cover with either polythene or bubble plastic to retain the heat, or place pots on a heated bench or in a propagator with the temperature set at 13°C (55°F).
Remove the covers when the leaves appear. Plant seedlings outside when they are large enough to be handled and the root system is well developed. Add garden compost to the soil if it is heavy or infertile.


Sowing Direct:
Plant outside as early as possible to miss heavy frosts, to germinate in about 1 to 3 weeks, in mid-April through mid-May, after the danger of spring frost is past. Ideally, when the soil temperature has reached 13 to 16°C (55 to 60°F).
Sow the seed 5cm (2in) deep and space 45cm (18in) apart in borders. Give the plants plenty of room, especially for low-growing varieties that will branch out. Make rows about 30 inches apart. For very smaller varieties, plant closer together, around 30cm (12in) apart. You can plant multiple seeds and thin them to the strongest contenders when the plants are 15cm (6in) tall.
Experiment with plantings staggered over 5 to 6 weeks to keep enjoying continuous blooms. Water seedlings regularly and, when growing tall forms, feed sparingly with a liquid fertiliser when 60cm (2ft) high. Beware of slugs when they are still young plants and birds stealing the seeds.


Cultivation:
Once the plant is established, water deeply though infrequently to encourage deep rooting and feed sparingly with a liquid fertiliser. Avoid splashing water or fertiliser solution on the stems or leaves. It may help to build a moat in a circle around the plant about 30 to 45cm (12 to 18in) out. Over-fertilisation can cause stem breakage in the autumn especially if the heads are large.
Tall species and cultivars require support. Bamboo stakes are a good choice for any plant that has a strong, single stem and needs support for a short period of time. Remember to cap the top of the cane with any small rounded object or upturned small pot to avoid any eye injuries.


Harvesting Cut Flowers:
Handle sunflowers gently, although they may appear robust, the petals and more delicate parts may bruise. For the vase, cut the fresh flowers in the morning just after they open, but wait until the sun has dried the dew. Remove leaves that are low on the stem, leaving just two or three higher up, near the flower's face. Place the flowers in a bucket filled with water, and leave them to stand for several hours in a cool room before placing in a vase.
Use a clean knife, a clean vase and a few drops of bleach in the water to keep it fresh. Change the water every few days. Blooms can last up to a fortnight when kept in water.


Harvesting Seed:
To dry sunflower seeds, cut the heads off when they begin to yellow at the back and hang them upside down in a dry location away from rodents and birds. Once dry, rub the seeds off and soak overnight in 4 litres (1 gallon) of water with 1 cup of salt in it.
Dry in a low heat, 120°C (250°F) oven for 4 to 5 hours and store in an airtight container. The black-seeded varieties are mainly for oil and birdseed. The grey and white-striped varieties are for drying and eating.


Origin:
A native of North America, Helianthus annuus is a member of the Asteraceae family. Sunflowers become very popular as a cultivated plant in the 18th century. The plant was initially used as on ornamental but by 1769 literature mentions sunflower cultivated by oil production. Today the sunflower is grown for crops in the Mediterranean, Eastern Europe, Argentina, India and the USA.
Artists throughout history have appreciated the sunflower's unique splendor, and those of the Impressionist era were especially fixated on the flower.


Nomenclature:
The Latin name for Sunflower, Helianthus annuus, is taken from the Greek helios, meaning sun, and anthos, meaning flower. The Sunflower originated from South America and represented the sun to worshiping Aztec people; it was brought to Europe in the late sixteenth century.
The species name annuus was named by Linnaeus, it was the only sunflower known to him that lived for a single season, hence it was called annus which means 'annual', 'yearly' or 'lasting a year'.


Additional Information

Additional Information

Packet Size 2 grams
Average Seed Count 75 seeds
Genus Helianthus
Species annuus
Cultivar Earthwalker
Common Name Sunflower, Branching Sunflower
Hardiness Hardy Annual
Flowers Rich orange to deep terracotta. Midsummer to Early Autumn
Height to 180 to 270cm (to 6 to 9ft)
Spacing 40 to 50cm (16 to 20in)
Position Full Sun to Partial Shade
Germination 5 to 21 days

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