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Kalmia latifolia Olympic Fire - Mountain Laurel

Kalmia latifolia Olympic Fire
Mountain Laurel, Calico Bush, Spoonwood, American Mountain Laurel, Broad-leaved Kalmia

4,7/5
4 reviews
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2 reviews
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very beautiful young plant, arrived in good health, which will undoubtedly thrive in partial shade in soil so favorable to rhododendrons, that of my garden

Mireille, 05/10/2022

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This plant carries a 24 months recovery warranty

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Graden Merit Value-for-money
This is another dwarf Kalmia. This one has a more vibrant spring flower than most, in white and pink, and flowers are still very abundant. These corollas of thick texture, a bit waxy, look like little sugar tulips. It's an evergreen shrub with tough, glossy dark green foliage.
Flower size
10 cm
Height at maturity
1 m
Spread at maturity
1 m
Exposure
Partial shade
Hardiness
Hardy down to -29°C
Soil moisture
Moist soil
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Best planting time March to April, September to October
Recommended planting time March to May, September to October
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Flowering time May to June
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Description

Kalmia latifolia Olympic Fire is a delightful hardy dwarf bush of heathland, with a bushy and dense habit, and evergreen foliage. In May-June, it adorns itself with a multitude of flower clusters, pink and white, more vividly coloured than most, but just as generous. These thick-textured, somewhat waxy corollas, look like little sugar tulips. It's a bush with a compact habit, with tough, dark glossy green foliage, with a soft character.

 

Kalmia latifolia, native to the mountains of eastern North America, and also named Mountain Laurel or American Laurel, belongs to the Ericaceae family, like Heather and Rhododendron. This wide-leafed Kalmia Olympic Fire is a small-sized, evergreen shrub, not exceeding 1 meter (3 feet 4 inches) in all directions, and with slow growth. Its well-branched trunk, gives it a bushy, compact and somewhat erect habit. Its evergreen, shiny dark green foliage, with a lighter underside, is composed of small varnished, tough and thick leaves, alternate and lanceolate (like those of Rhododendrons or Laurels), thus guaranteeing very decorative interest all year round. The plant's display is at its peak in early summer, during its very spectacular flowering! Indeed, in May-June, it is completely covered with flowers with very original patterning. Each branch bears terminal clusters (corymbs) of small pink-white flowers, in the shape of 5-sided, very flared, campanulate corollas, 2 to 2.5 cm (0.8 to 1 in) in diameter, bearing 10 stamens housed in the petals. The outside of the petals are dark pink, as are the floral buds. The flowers do not all bloom together, the corymbs present astonishing contrasts between the unopen, veined floral buds and the already blossomed flowers.  After flowering, if they have not fallen, the flowers give way to fruits in the form of brown capsules, which last all winter.

 

This dwarf Kalmia, unjustly unknown, whose sumptuous flowers are enchanting, is a particularly hardy heathland shrub that should be planted in semi-shade, in a moist and humus-rich soil. Assuredly exquisite, very decorative and uncommon, Kalmia Olympic Fire will work beautifully in the garden, where it will highlight all the surrounding plants!  It can be used in many ways. It will be the ideal companion for ericaceous plants (Rhododendrons, Azaleas, Camellias, Heathers, Hydrangeas, Japanese Maples, Magnolias, Andromedas, Cyclamens...). It will work wonders in an informal hedge, in mixed shrub planting, mixed into a perennial bed, around a pond, or even planted as a specimen. Due to its small size, it is perfectly suitable for pots on balconies or patios, provided the soil is kept constantly moist.

 

 

Properties:

Kalmia latifolia is a shrub which is entirely toxic to humans as well as for animals (dogs, cats, sheep, horses) when eaten, including its leaves, flowers, fruits and roots.

However, it is used in homeopathy for pain relief. In the past, its very hard wood was used to make many tools, including wooden spoons, hence its English nickname of Spoonwood.

Anecdote:

The denomination of the Kalmia genus, was chosen by Carl von Linnaeus, in tribute to Pehr Kalm, famous Swedish botanist, who was one of the first to explore the flora in certain parts of North America from 1747 to 1751.

The flower of the Kalmia latifolia is the emblem of the States of Connecticut and Pennsylvania.

Kalmia latifolia Olympic Fire - Mountain Laurel in pictures

Kalmia latifolia Olympic Fire - Mountain Laurel (Foliage) Foliage

Plant habit

Height at maturity 1 m
Spread at maturity 1 m
Habit Irregular, bushy
Growth rate slow

Flowering

Flower colour pink
Flowering time May to June
Inflorescence Corymb
Flower size 10 cm
Fruit colour black

Foliage

Foliage persistence Evergreen
Foliage colour green

Botanical data

Genus

Kalmia

Species

latifolia

Cultivar

Olympic Fire

Family

Ericaceae

Other common names

Mountain Laurel, Calico Bush, Spoonwood, American Mountain Laurel, Broad-leaved Kalmia

Origin

North America

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Planting and care

Native to the mountains of eastern North America, Kalmia latifolia Olympic Fire is extremely hardy and can withstand very low temperatures, below -20°C (-4 °F). Belonging to the Ericaceae family, it needs to be planted in a semi-shaded position, in a humus-rich and fertile soil, acidic, moist but well-drained.  Plant in spring or autumn, avoiding periods of frost or high heat. Prepare a wide and deep pit, 40 cm (15.7 in) by 40 cm (15.7 in) so that your Kalmia latifolia Olympic Fire can quickly establish itself.  Regular watering in the first few weeks after planting is necessary to keep the soil moist. A mulch at the base of the plant can be beneficial to protect the thin and superficial roots.  Each spring, scratch the soil around the base of the plant and top with compost, ericaceous soil and mulch. If the soil is calcareous, it will need to be completely replaced by a mix of ericaceous soil and leaf compost in a large planting pit.  The mountain laurel dislikes scorching situations and sweltering summers. It must be placed in such a way that it is shaded during the hottest hours of the day. The mountain laurel dislikes exposure to strong sunlight, especially in case of drought, and ensure regular watering (preferably with rainwater). This summer watering is particularly important since this is when the flower buds form for the following spring. The mountain laurel, liking coolness and good humidity, will thrive in coastal or rainy climates. With its slow growth, it is well suited to pots on a patio or balcony but use a large pot and water well to avoid the soil from drying out. Apart from removing faded flowers, pruning of Kalmia latifolia is hardly necessary. Indeed, it risks damaging the flowers for the following year, as the flower buds form at the ends of the branches. However, it is possible to remove dead wood and carry out a very slight refreshment to maintain a balanced habit.

Planting period

Best planting time March to April, September to October
Recommended planting time March to May, September to October

Intended location

Suitable for Shaded rockery, Woodland edge
Type of use Border, Free-standing, Container, Hedge
Hardiness Hardy down to -29°C (USDA zone 5) Show map
Ease of cultivation Amateur
Planting density 1 per m2
Exposure Partial shade
Soil pH Acidic
Soil type Silty-loamy (rich and light)
Soil moisture Moist soil, rich in humus and light

Care

Pruning No pruning necessary
Soil moisture Moist soil
Disease resistance Good
Overwinter Can be left in the ground
4,7/5
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