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Inula helenium

Inula helenium
Elecampane, Elf Dock, Elf Wort, Else dock, Yellow Starwort

4,3/5
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Really spectacular young plant but slow to establish. I had to wait 3 years before it showed all its tiller potential.

Josiane, 04/02/2022

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This plant carries a 12 months recovery warranty

More information

This robust perennial rhizomatous plant appreciates moist soil and sunlight. Its large leaves bring volume to flower beds and a certain luxuriance, and its daisy-like flowers brighten up the season by attracting pollinators.
Flower size
6 cm
Height at maturity
1.50 m
Spread at maturity
90 cm
Exposure
Sun, Partial shade
Hardiness
Hardy down to -34°C
Soil moisture
Moist soil
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Best planting time March, September
Recommended planting time February to April, September to November
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Flowering time July to August
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Description

Inula helenium, or Elecampane, is a hardy perennial with a wild appearance. Thanks to its imposing size and large leaves, it generously occupies space and creates a lush vegetal screen. Its flowering takes place from July to August, brightening up the summer with the dance of pollinators that land on the large yellow flowers with delicate and slightly tousled petals.

 

Originally from Asia, Inula helenium has spread to Europe. It thrives in damp meadows and on the edges of woodlands. Therefore, it appreciates moist soils. Quite hardy, it withstands frost down to about -15°C (5°F), tolerates all types of soil, and prefers a sunny or partially shaded exposure. From its large rhizomatous stump, robust and pubescent stems emerge, reaching up to 1.5m (5ft) or more. These stems bear heads with a diameter of at least 5cm (2in). They consist of a large yellow heart that attracts insects and is surrounded by a row of extremely delicate florets, giving it a wild and tousled appearance. In autumn, silky achenes with plumes appear and scatter in the wind, settling everywhere. Its deciduous foliage is very present. The stump is covered with large, deeply veined, and wavy-edged leaves with a cottony, greyish-green underside. They alternate along the stem, are sessile, and become smaller as they approach the top.

 

Elecampane is an easy and hardy perennial that deserves to be rediscovered in our gardens. As a background plant, it forms a voluminous backdrop that can act as a screen and blend well with all the wild-looking giants: goat's beard, mugwort, meadowsweet, and goldenrod. This combination guarantees an effect with minimal maintenance. If you have a smaller garden, it can be placed as a solitary plant and will be captivating on its own.

 

Elecampane has been known for centuries for its numerous medicinal properties, as well as veterinary uses. The list is endless: tonic, diuretic, antitussive, febrifuge, and many more. Its rhizomes and heads are used dried, ground, in herbal tea, and in oil. The uses are multiple, including in cooking. But beware! Precautions are necessary, as some people may not tolerate its effects.

 

 

 

Inula helenium in pictures

Inula helenium (Flowering) Flowering
Inula helenium (Foliage) Foliage
Inula helenium (Plant habit) Plant habit

Flowering

Flower colour yellow
Flowering time July to August
Inflorescence Flower head
Flower size 6 cm
Bee-friendly Attracts pollinators

Foliage

Foliage persistence Deciduous
Foliage colour medium green

Plant habit

Height at maturity 1.50 m
Spread at maturity 90 cm
Growth rate normal

Botanical data

Genus

Inula

Species

helenium

Family

Asteraceae

Other common names

Elecampane, Elf Dock, Elf Wort, Else dock, Yellow Starwort

Origin

Central Europe

Planting and care

Inula helenium gives its best in moist, deep, and rich soil under a sunny exposure. However, it also tolerates limestone soil and a semi-shaded exposure.

If you wish to plant it in heavy soil, add some gravel to drain the bottom of the hole, as it doesn't appreciate waterlogged soil.

Don't forget its habit (up to 90cm (35in) wide) and leave some space around it so that it can spread as it wishes. It will only become more beautiful and generous.

Planting period

Best planting time March, September
Recommended planting time February to April, September to November

Intended location

Suitable for Meadow, Pond edge
Type of use Back of border
Hardiness Hardy down to -34°C (USDA zone 4) Show map
Ease of cultivation Beginner
Planting density 3 per m2
Exposure Sun, Partial shade
Soil pH Neutral, Calcareous
Soil type Clayey-chalky (heavy and alkaline), Silty-loamy (rich and light)
Soil moisture Moist soil, well-drained and moist

Care

Pruning instructions Cut back the clump before the start of the growing season and remove the stems after flowering if you do not want the seeds to disperse.
Pruning Pruning recommended once a year
Pruning time January, October
Disease resistance Very good
Overwinter Can be left in the ground
4,3/5
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