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When red becomes a mood, not merely a colour 🍷
Family: Sapindaceae · Pot diameter: 19 cm · Height: approx. 45 cm
Acer palmatum ‘Garnet’® spreads a lacework of deep wine red, with brown-red and purple shades giving its crown a rich sense of depth. The finely cut leaves leave little openings for light, keeping the striking dark palette airy. Along the arching branches they gather into gentle folds, like fabric falling freely. In autumn the red brightens, giving the same flowing form a final warm glow before its winter pause.
Its vigorous broad arching crown is at its best on a border edge, above low planting or in a wide outdoor pot where branches can fall freely. It acts as a natural sculpture and softens stone, steps and rigid lines with dark flowing foliage.
The cultivar ‘Garnet’ holds the RHS Recommended: Award of Garden Merit (1993), an internationally recognised distinction for dependable garden performance.
Three substantial qualities explain why ‘Garnet’ stands out both in close detail and in its overall presence.
Deep brown-red and purple foliage holds its summer intensity before becoming brighter red in autumn.
Exceptionally deep divisions turn each leaf into fine lace and give the crown continual movement.
Arching branches form a broad mounded silhouette that flows naturally over its base.
Why you will love it: Dark, lace-like and flowing: a living cascade that completes a refined composition.
Use it as a focal point near an entrance, sheltered seating area or in the middle layer of a cool mixed planting. At maturity, it develops a vigorous broad mound with arching cascading branches and benefits from a calm background and sufficient open space to retain its natural architecture.
For several plants retaining a free natural crown, allow centre-to-centre spacing close to the indicative mature spread of 1.5–2.5 m. In a pot choose a stable base, free drainage and a position where the roots are protected from overheating.
The deep garnet and purple palette of ‘Garnet’ becomes clearer beside golden arcs, yellow lines and ivory ferns. All three choices suit bright partial shade and organic soil with even moisture and good drainage, creating clean layers around the Acer’s natural form.
Bright partial shade or gentle morning sun, sheltered from fierce afternoon sun and drying wind.
Water thoroughly when the upper layer begins to dry, maintaining even moisture without waterlogging; check pots more frequently in hot weather.
Deciduous and hardy in winter cold; fresh growth benefits from shelter against late frost, hot dry air and extreme summer exposure.
An ornamental plant, not food. It is not intended for consumption; place it away from children or animals that tend to chew plant material.
Bright partial shade or gentle morning sun, sheltered from fierce afternoon sun and drying wind.
Plant in fertile, organic, acid to neutral soil that retains moisture yet drains freely. Keep the root collar level with the surrounding soil and allow the natural crown the space indicated by its mature habit.
Use a roomy, stable outdoor pot with unobstructed drainage holes and a structured growing medium that resists compaction. It can grow for years in a large outdoor pot with free drainage and even moisture. As it matures towards 2.5–4 m × 1.5–2.5 m, check available root space periodically and move to a larger pot when required.
Water thoroughly when the upper layer begins to dry, maintaining even moisture without waterlogging; check pots more frequently in hot weather. An organic mulch helps buffer sudden changes in moisture and temperature.
A light application of balanced fertiliser in early spring is usually sufficient. Avoid excessive nitrogen and late feeding, which encourage soft new growth.
Pruning is rarely necessary. Remove only dead, damaged or awkwardly crossing branches after leaf fall and before midwinter. A bare crown in winter is entirely normal.
After planting, new growth may be restrained while the root system settles. Even moisture and a sheltered microclimate matter more than rapid extension.
As the main shoots branch, the plant gradually develops a vigorous broad mound with arching cascading branches. Its natural line is most attractive when it is not clipped into a rigid shape.
With maturity it repeats its distinctive colour cycle each year: deep brown-red and purple from spring through summer and brighter red in autumn, followed by natural leaf fall.
The framework spreads broadly, with finer branch tips curving downwards.
The leaves fall naturally in autumn. Winter reveals the woody framework that will support new growth the following spring.
What to expect after planting: In a suitable position in open ground, the mature form reaches approximately 2.5–4 m in height and 1.5–2.5 m in spread over 10–20 years. Growth usually remains more restrained in a pot.
The story of ‘Garnet’ begins in 1959 in Boskoop, the Netherlands. There, the Guldemond brothers singled out a seedling from a batch of Italian rootstocks, starting the journey of a new cultivar with deeply red, finely cut foliage.
Its colour supplied its name: “Garnet Red” in the Royal Horticultural Society colour chart captured the plant’s distinctive tone. From the outset, ‘Garnet’ was associated with the red of the gemstone.
In 1993 the cultivar received the Award of Garden Merit, adding recognition of its garden performance to its Dutch history.
In the Dissectum Group, the main lobes reach almost to the leaf base and divide again into finely toothed segments; this secondary division creates the characteristic lace-like texture.
The leaves of ‘Garnet’ arise in opposite pairs: two stalks start at the same node on opposing sides of a shoot. Beneath the crown’s lace-like surface, this regular arrangement remains visible if you follow a slender branch.
Six practical answers covering light, seasonal colour, pots, mature size, pruning and winter leaf fall.
Bright partial shade or gentle morning sun, sheltered from fierce afternoon sun and drying wind. A sheltered microclimate matters just as much as the number of hours of light.
Deep purple tones vary with light and temperature, while brighter autumn red is the cultivar’s natural seasonal peak.
It can grow for years in a large outdoor pot with free drainage and even moisture. As it matures towards 2.5–4 m × 1.5–2.5 m, check available root space periodically and move to a larger pot when required.
In a suitable position in open ground it reaches approximately 2.5–4 m in height and 1.5–2.5 m in spread over 10–20 years. Microclimate and available root space influence the rate.
Usually not; its natural architecture is central to its beauty. If cleaning is needed, work after leaf fall and before midwinter, removing only what is necessary.
Yes. It is deciduous and sheds its leaves in autumn after completing its colour cycle. Fresh growth returns in spring.
