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Rhododendron Arctic Tern

Rhododendron x Ledodendron Artic Tern
Rhododendron

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Bush with a reduced size and evergreen, narrow, light green and shiny foliage. This award-winning, highly floriferous variety, is covered with green flower buds that open into adorable tiny white flowers with a green throat, gathered in compact clusters for a very beautiful spectacle in the garden. As it does not exceed 60 cm in all directions, it can fit anywhere as long as the soil is moist, humus-rich, and acidic to neutral. Although it tolerates some sun, avoid placing it in an exposed location during the hottest hours from 12 pm to 5 pm.
Flower size
1 cm
Height at maturity
60 cm
Spread at maturity
60 cm
Exposure
Sun, Partial shade
Hardiness
Hardy down to -23°C
Soil moisture
Moist soil
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Best planting time March, October
Recommended planting time February to May, September to October
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Flowering time May to June
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Description

Rhododendron Arctic Tern is a dwarf evergreen bush with a rounded, erect, and open habit. This vigorous variety has small, narrow, light green, glossy foliage. Its late flowering for this type of rhododendron occurs in May-June, in the form of tight clusters of small white flowers with a green throat, measuring 1 cm in diameter. This little "rhodo" does not exceed 50 to 60 cm in height in 10 years. It dresses up small beds, borders, and pots all year round and is grown in cool, semi-shaded acidic soil. This delightful specimen has been awarded the Royal Horticultural Society's Award of Garden Merit in England.

Rhododendrons are plants belonging to the Ericaceae family, which includes a hundred genera, many of which are common in our gardens. Heathers, Kalmia, Andromeda, Leucothoe, Oxydendrum, and Gaultheria are valuable in ornamental beds, while Arbutus and especially Vaccinium delight us with their fruits. The vast majority of these plants prefer limestone-free, acidic soils and humid climates.

Rhododendron Arctic Tern comes from Rhododendron trichostomum, native to southwestern China, a very branched and low-growing botanical species. It forms a dense, rounded bush, reaching 60 cm in height and spread at maturity. Its evergreen leaves are elliptical, slender, and leathery. During May and June, this dwarf shrub is literally covered with green flower buds that open into pure white flowers with a small green throat. The flowers are grouped in terminal corymbs composed of 3 to 6 flowers or more. A special sight in your garden.

Hardy down to -20°C, the Rhododendron Arctic Tern prefers a semi-shaded exposure or slightly more sun, avoiding the period from 12 pm to 5 pm. With slow growth, this heather-loving shrub thrives in moist, humus-bearing, well-drained, and slightly acidic soils. Rhododendron Artic Tern will be ideal for bordering beds, in pots, or even as a standalone plant in a small garden. In beds, this miniature Rhododendron occupies the foreground, in front of acid-loving plants with a taller habit, such as the superb Kalmias, or Mountain Laurels, with beautiful dark green foliage and lovely small flowers in May-June. It also thrives in the light shade of an Oxydendrum arboreum, whose long clusters of white bell-shaped flowers in summer and striking autumn foliage provide a spectacle for much of the year. To ensure flowers all year round, complete this picture with an Autumn Camellia like the magnificent Camellia sasanqua Yuletide, with its bright red flowers and yellow stamen hearts enchanting your days from November to January.

Plant habit

Height at maturity 60 cm
Spread at maturity 60 cm
Habit Irregular, bushy
Growth rate slow

Flowering

Flower colour white
Flowering time May to June
Inflorescence Corymb
Flower size 1 cm
Bee-friendly Attracts pollinators

Foliage

Foliage persistence Evergreen
Foliage colour green

Botanical data

Genus

Rhododendron

Species

x Ledodendron

Cultivar

Artic Tern

Family

Ericaceae

Other common names

Rhododendron

Botanical synonyms

Ledodendron 'Arctic Tern'

Origin

Cultivar or hybrid

Planting and care

Plant Rhododendron Arctic Tern in a sunny but not scorching or windy spot, or in partial shade, protected from cold and drying winds, in moist, humus-rich, and light soil with an acidic tendency. Like all acid-loving plants, it cannot tolerate calcareous soils or heavy soils that are waterlogged in winter. Dig a hole three times larger than the pot. Soak the root ball in non-calcareous water and plant the bush at the same level, in a mixture composed of 1/4 turf, leaf compost, gravel or pumice, and loam. Water thoroughly and keep the soil moist in summer. Azaleas and Rhododendrons have a shallow root system. As a result, they are sensitive to long periods of drought. That's why humus-enriched soil and abundant watering during dry periods are recommended. In addition, this root system is not very strong, so it is essential to lighten heavy soils with draining materials (gravel, pumice, clay balls) at planting. Apply a mulch of shredded pine bark at the base of the bush every spring to keep the soil moist while maintaining an acidic pH. Maintenance consists of removing faded flowers in summer and cleaning dead branches. Azaleas and Rhododendrons can sometimes be attacked by weevils that eat the edges of leaves and rootlets, as well as the famous "rhododendron beetle" which does not often cause severe damage. Yellowing of leaves (chlorosis) in Rhododendron indicates poor assimilation of iron in the soil and can lead to the premature death of the plant. While limestone is often the cause, poorly drained soil or a deeply planted root ball can also explain the phenomenon.

Planting period

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

Intended location

Suitable for Woodland edge
Type of use Edge of border, Free-standing, Container
Hardiness Hardy down to -23°C (USDA zone 6a) Show map
Ease of cultivation Amateur
Planting density 3 per m2
Exposure Sun, Partial shade
Soil pH Acidic
Soil type Silty-loamy (rich and light)
Soil moisture Moist soil, Rich and well-drained

Care

Pruning No pruning necessary
Soil moisture Moist soil
Overwinter Can be left in the ground

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