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Kalmia procumbens

Kalmia procumbens · Ericaceae

The gardener's calendar

The right move for September

Ideal time to plant kalmia procumbens: set it out when the soil is neither frozen nor waterlogged, and water generously as it establishes.

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ID card

Common name
Alpine Laurel, Creeping Kalmia
Family
Ericaceae
Plant type
Evergreen herbaceous plant
Adult size
15 to 30 cm in height, creeping and spreading habit
Flowering
June to July, pink or white cup-shaped flowers
Foliage
Evergreen, small dark green oval leaves
Hardiness
Very hardy, down to −25 °C
Origin
Alps and mountains of central Europe

Care

Light and exposure

Kalmia procumbens prefers a sunny to partially shaded location. It tolerates partial shade well in warm regions. Place it in a well-lit spot to encourage generous flowering and a compact growth habit.

Soil and substrate

This alpine species requires acidic, well-drained soil that is poor in nutrients, ideally enriched with peat or heather soil. Absolutely avoid chalky soils and compacted earth. Good drainage is crucial to prevent root rot.

Watering

Water regularly to keep the soil moist but not waterlogged, especially during the growing season. In winter, reduce watering but don't let the root ball dry out completely. Prefer rainwater or demineralized water.

Fertilization

Kalmia procumbens needs only light fertilization. Apply a fertilizer designed for heather plants in spring, or follow guidance from balanced compost. Avoid excess feeding, which would harm this hardy alpine plant.

Pruning and maintenance

Pinch back young shoots lightly to encourage dense branching. After flowering, remove spent flowers. Perform light cleanup in late winter to remove dead or diseased branches.

Pests and diseases

Very resistant, Kalmia procumbens may be affected by root rot if drainage is inadequate. Watch for spider mites in very dry conditions. Good aeration and clean substrate prevent most problems.

Did you know?

Kalmia procumbens flowers with remarkable blooms featuring small pockets that trap the stamens: when an insect forages, its weight suddenly releases these stamens, which brush pollen onto its body—a fascinating mechanism for cross-pollination. This creeping alpine species is a true treasure of mountain rockeries and peat bogs.

Where to buy it

Plant in spring or early autumn, avoiding spells of intense heat. Pick a plant with healthy foliage and roots that are not exposed. Best time: March, April, May, September.

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Tips generated and checked by Viridia — adapt them to your local climate.