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    Helichrysum stoechas (Curry Plant)

    Helichrysum stoechas commonly called Curry Plant, Common Shrubby Everlasting, or Eternal Flower, is a small, aromatic, compact, evergreen shrub with a cushion form. It has thin grey-green leaves and orange-yellow button-like flower heads arranged in dense corymbs at the end of the stems.

    It is a drought-tolerant shrub native to the Mediterranean basin, specifically South-West Europe and Northern Morocco.


    Quick Overview

    TYPE

    Type Shrub

    HEIGHT & WIDTH

    Helichrysum stoechas height and width

    BLOOM TIME

    Helichrysum stoechas bloom time

    SUNLIGHT

    full sun

    HARDINESS

    hardiness (-12ºC / 10º F)

    DROUGHT TOLERANCE

    drought tolerance aprox 5 months

    ORIGIN

    origin mediterranean basin

    Taxonomy

    • Botanical name: Helichrysum stoechas  (hel-ih-KRY-sum STO-kas
    • Family: Asteraceae (ass-ter-AY-see-eye)
    • Common name:  Curry Plant,  Common Shrubby Everlasting, Eternal Flower
    NameMeaning
    HelichrysumDerives from Greek words. Heli = Sun and chrysus= Gold, meaning golden sun. Refers to its round golden yellow flowers.
    stoechasRefers to the French Islands called Stoechades, where this plant was first identified.

    How to identify Helichrysum stoechas

    Helichrysum stoechas shrub (Curry plant, Common Shrubby Everlasting, or Eternal Flower)

    Shrub

    Small, aromatic evergreen shrub with a compact cushion shape. It has thin grey-green leaves and orange-yellow flower heads on long stems rising above the foliage.

    It has upright stems in the middle and slightly curving stems on the edges.

    The shrub has an average height of 30 cm (1 ft),  and a width of 30 to 40 cm (1 to 1.3 ft).

    Its fragrance is similar to curry, hence the common name curry plant.

    This species varies widely in terms of habit, size of the stems and leaves, leaf shape and hairiness. This variation is probably influenced by various environmental factors.

    Helichrysum stoechas stem (Curry plant, Common Shrubby Everlasting, or Eternal Flower)

    Stem

    The stems are more or less straight, i.e, they can vary from upright to decumbent (spreading with slightly curving ends). They are grey-green and very hairy.

    The stem has alternate leaves, which are denser at the base and progressively less dense and smaller towards the inflorescence.

    Helichrysum stoechas leaf (Curry plant, Common Shrubby Everlasting, or Eternal Flower)

    Leaf

    The leaf is aromatic (curry-scented), grey-green to whitish, and sessile (no stalk). The upper side is lightly-haired, and the underside is densely-haired.

    The shape of the leaf is narrow linear, untoothed and with down-turned margins.

    The size varies between 3 and 35 mm ( 0.11 and 1.37 in) long and 0.4 to 2 mm  (0.01 and 0.07  in) wide.

    Helichrysum stoechas flower (Curry plant, Common Shrubby Everlasting, or Eternal Flower)

    Flower

    The inflorescence is a dense corymb around 30 mm (1.18 in) with several button-like flower heads enclosed in a spherical involucre. 

    Each flower head has a diameter between 4 and 7 mm (0.15 and 0.27 in) and is composed of tiny orange-yellow flowers

    The tiny flowers (disc florets) are tubular and have five petals fused at the base. They are held in a tight bundle enclosed by rows of overlapping papery white bracts. The flowers are a mix of female and hermaphrodite, with the stamens and pistil sticking out from inside the corolla.

    Helichrysum stoechas Usage

    Ornamental

    In the garden

    This shrub is very pretty with its compact cushion shape of grey-green leaves. During the summer, its flower stalks rise above the foliage carrying many orange-yellow button-like flowers that create a spectacular effect.

    It can be used as a solitary plant or planted in groups. Can be planted in pots, beds or borders. In rock or gravel gardens.

    It can also be used for seaside gardens because of its resistance to salty water sprays.

    Flower arrangements

    Helichrysum stoechas is also called everlasting because the colour of the bracts remains alive long after the stems are cut. Because of this, they are very popular in dry floral arrangements.

    Medicinal

    Helichrysum stoechas has been used in folk medicine to treat respiratory problems such as allergies, flu, and bronchitis and skin diseases such as eczema, herpes, acne, burns, and wounds.

    Studies have demonstrated its antibacterial, antiproliferative, antioxidant, antidiabetic and neuroprotective properties.

    Cosmetics

    Due to its intense warm aroma, the essential oil of Helichrysum stoechas is used in the production of perfumes and cosmetics.

    Culinary

    Its unusual curry fragrance is very much appreciated in cooking meat, soups, rice and vegetable dishes.

    Biodiversity

    The flowers of this shrub are attractive to bees, butterflies and other pollinating insects, which then attract other wildlife such as birds, enhancing the biodiversity of your garden.

    Revegetation

    Due to its robustness and adaptation to harsh conditions, Helychrysum stoechas is used as a seed plant for revegetation of stony slopes, scree and coastal dunes.

    Cultural

    In antiquity, the flowers of the Helichrysum plants were used to make wreaths to crown idols.  Ancient Romans and Greeks decorated the statues of gods with wreaths if Helichrysum flowerheads.

    Helichrysum stoechas habitat

    This shrub grows in the typical Mediterranean landscape at altitudes up to 2000m (6500 ft).

    It is seen in dry, rocky and sandy areas. Scrublands, thickets and forest clearings.

    It also grows in coastal areas because of its tolerance to maritime exposure.

    How to care for Helichrysum stoechas

    Cold exposure

    This shrub is cold hardy, tolerating frost and temperatures down to -12ºc (10ºF), as long as the soil is well drained.

    However, until it is fully established, it will need winter protection.  Add some mulch to protect the roots from low temperatures and the foliage from the wet soil.

    Sun exposure

    Needs full sun (at least 6 hours per day) to maintain its best colour and compact shape. In the shade, it becomes more floppy as the stems lose their firmness when deprived of sunlight.

    Soil

    It likes hot, well-drained to dry, stony or sandy soils. It especially dislikes wet soil, which makes it more exposed to fungal diseases.

    If prefers poor soils, if they’re fertile, the shrub tends to become leggy and has more difficulty tolerating drought and cold temperatures.

    It grows well in most types of soils: mildly acidic, neutral and mildly alkaline.

    Watering

    Once established, the Curry Plant is drought tolerant and can go for a long time without water (about 5 months if the temperature is not too hot). 

    Overwatering will probably kill it. In particular, the combination of heat and humidity can lead to fungal disease.

    During the first two years after planting, you will need to water the young plant every two to three weeks during the summer.  Allow the soil to dry out between watering. In case of a heat wave, water more frequently. Monitor your plants closely and look out for any signs of stress.

    To preserve the soil´s moisture, you should add mulch around the root area of the plant (but not too close to the base). Wood chips and gravel are good options for mulching. 

    Other Conditions

    Helichrysum stoechas can tolerate strong winds and maritime exposure, so it is adapted to coastal conditions.

    The best season to plant is during Autumn, so it will have all winter to develop its roots. In very cold areas, it is best to plant during the spring as long as there is available water throughout the summer to survive while developing its roots.

    How to prune Helichrysum stoechas

    Pruning is essential to maintain the plant´s compact decorative shape and flowering.

    Ideally, you should give it a hard prune in early spring, which is essential to maintain its compactness and avoid becoming too woody or splitting apart. Then a light prune in late summer after flowering to encourage bushiness. 

    Be careful to always prune above the leaf, as the stems will not regrow if it is cut back too hard.

    How to propagate Helichrysum stoechas

    The curry plant can be propagated by seed sown in late winter and early spring.

    It can also be propagated by softwood cuttings taken in early spring or by semi-hardwood cuttings taken in later spring and summer.

    A good online source for plant propagation techniques can be found at RHS.

    If you prefer books, I can recommend the following:

    • Creative propagation: a grower’s guide by Thompson, Peter,
    • RHS Propagating Plants: How to Create New Plants For Free by Alan Toogood, Royal Horticultural Society

    Other Helichrysums you may also like

    Sources

    Sources of information used for this article

    Internet

    Article from Jardin Sec

    Models for images from  https://www.florandalucia.es/index.php/helichrysum-stoechas

    Vol XVI from FloraIberica

    Books

    Field Guide to the Wildflowers of the Western Mediterranean, Second edition Paperback – 1 Oct. 2021 by Chris Thorogood

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