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Kalmia latifolia Keepsake - Mountain Laurel

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

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Very beautiful plant, well established and producing a very nice shoot!

michele C, 21/09/2024

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This plant carries a 24 months recovery warranty

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A medium to modest size kalmia, with remarkable colour. This evergreen shrub has abundant flowers in May-June.  These flowers are both vivid and contrasting in colour, raspberry red floral buds that open into red wine bells finely bordered with white. Its shiny, bright green foliage forms a beautiful setting for these flowers. It covers the plant with elegant, well-ordered vegetation. Kalmia grows in the sun or semi-shade, in acidic, humus-rich soil.
Flower size
10 cm
Height at maturity
1.50 m
Spread at maturity
1.20 m
Exposure
Partial shade
Hardiness
Hardy down to -29°C
Soil moisture
Moist soil
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Best planting time March, 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 'Keepsake', is a charming evergreen shrub of heathland soil commonly known as mountain laurel. With a lovely bushy and dense habit, this selection offers magnificent clusters of flowers in late spring with a red wine colour edged with white. They mix with intense raspberry red floral buds, perfectly highlighted by beautiful shiny leaves. Very hardy, this kalmia only thrives in acidic, rich and well-drained soils. It will bring a beautiful touch of drama to traditional ericaceous beds. 

Kalmia latifolia Keepsake belongs to the Ericaceae family, like heathers and rhododendrons. Its ancestor, called mountain laurel or American laurel, as its name suggests, is endemic to the mountains of eastern North America. 'Keepsake' is moderate in size, not exceeding 1.50 m (4 ft 11 in) in height for 1.25 m (4 ft 1 in) in width. Its growth is quite slow. Its well-branched trunk gives it a bushy, compact and somewhat erect habit. Its foliage is made up of small bright green lanceolate leaves , varnished, tough and thick, and decorative all year round.  Evergreen in winter. The plant's display is at its peak during the flowering period which lasts about 4 weeks in May-June. Each branch carries terminal clusters of small flowers 2 to 2.5 cm (0.8 to 1 in) in diameter. Not all flowers open at the same time, they provide an astonishing contrast between the unopened floral buds and the small bells already bloomed. After flowering, if they have not fallen, the flowers give way to fruits in the form of brown capsules, which last all winter.

The shape and very rich colour of the flowers of Kalmia latifolia 'Keepsake' look like pretty little English porcelain cups placed on a green setting, what elegance! 

Kalmias are particularly hardy ericacous plants which are unfairly unknown. In the right conditions, they bloom abundantly, require little maintenance and thrive. Attractive all year round, Kalmia 'Keepsake' will suit a semi-shaded spot in the garden, where it will beautifully highlight all its neighbours. It will be the ideal companion for all the other ericaceous plants. It will work well in a small flowering hedge, in a group of mixed shrubs or added into a perennial bed.  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.

Kalmia latifolia Keepsake - Mountain Laurel in pictures

Kalmia latifolia Keepsake - Mountain Laurel (Flowering) Flowering
Kalmia latifolia Keepsake - Mountain Laurel (Foliage) Foliage
Kalmia latifolia Keepsake - Mountain Laurel (Plant habit) Plant habit

Plant habit

Height at maturity 1.50 m
Spread at maturity 1.20 m
Habit Irregular, bushy
Growth rate slow

Flowering

Flower colour two-tone
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

Keepsake

Family

Ericaceae

Other common names

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

Origin

Cultivar or hybrid

Product reference166731

Planting and care

Kalmia latifolia 'Keepsake' is extremely hardy and can withstand very low temperatures, below -20 °C.  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 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, October
Recommended planting time March to May, September to October

Intended location

Suitable for 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, Neutral
Soil type Silty-loamy (rich and light)
Soil moisture Moist soil, rich in humus and well drained

Care

Pruning instructions Other than the removal of faded flowers, pruning of Kalmia latifolia is hardly necessary. Indeed, it may damage the flowering of the following year, as flower buds form at the ends of the branches. However, it is possible to remove dead wood and perform a very light prune to maintain a balanced habit.
Pruning Pruning recommended once a year
Pruning time June
Soil moisture Moist soil
Disease resistance Good
Overwinter Can be left in the ground
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