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Acer 'Osakazuki'® premium 19cm

Name: Acer 'Osakazuki'® premium 19cm
Brand: Greenleaf Garden Center
SKU: AcerOsaka19cm
Price: 35.0 EUR
Availability: OutOfStock

€35,00

Quantity

Deciduous ornamental shrub or small tree · Sapindaceae · Large upright crown with a rounded outline

Acer palmatum ‘Osakazuki’®

You say “it is green” and then look for sunglasses in autumn 🕶️

Family: Sapindaceae · Pot diameter: 19 cm · Height: approx. 45 cm

Large substantial leaves
Statuesque green presence
Rounded mature crown
RHS Recommended: Award of Garden Merit

Acer palmatum ‘Osakazuki’® saves its great surprise for autumn. Through the warm season, broad seven-lobed leaves weave a generous green crown, as calm as shade in a Japanese garden. Then that same canopy glows orange-scarlet and deep crimson, with colour that catches the eye from across the garden. Its strength lies in this transformation: an understated everyday presence with an autumn finale that is hard to forget.

An open view from a seating area, the curve of a path or the far end of a courtyard gives the whole tree room to be appreciated. Its gradually rounded crown suits low planting and a quiet background, making summer green and autumn red part of the everyday view.

The cultivar ‘Osakazuki’ holds the RHS Recommended: Award of Garden Merit (1993), an internationally recognised distinction for dependable garden performance.

What makes it special

Three substantial qualities explain why ‘Osakazuki’ stands out both in close detail and in its overall presence.

Colour in successive chapters

Clear summer green turns exceptionally bright orange-scarlet and crimson in autumn.

Foliage that rewards a closer look

Large substantial palmate leaves create a unified surface that reads clearly even from a distance.

A silhouette with design value

The upright rounded form acts like a natural sculpture with a strong architectural presence.

Why you will love it: Calm green authority through the season, followed by a scarlet standing ovation.

In the garden & on the balcony Placement & plant combinations A focal point in sheltered bright partial shade, with enough open space to appreciate its large upright crown with a rounded outline

Planting position

Room for the crown

Give it a position at the far end of a courtyard or beside a bend in a path, where its large rounded crown can be seen in full. Surround it with low planting and leave clearance from roofs and narrow walkways so that its branches can spread without constant pruning.

Allow for the branches to extend over time and leave generous clearance from neighbouring trees. In a pot choose a stable base, free drainage and a position where the roots are protected from overheating.

Colour & compatibility

Combinations that work

Its green summer crown and scarlet autumn colour work with soft grass curves, dark evergreen leaves and airy fern fronds. The following choices create different layers around it and suit bright partial shade with even moisture and good drainage.

Hakonechloa macra ‘Beni-kaze’ — its green arcs turn red from late summer and create a natural dialogue with the substantial green crown and scarlet autumn colour
Skimmia japonica ‘Rubella’ — its red winter buds and dark evergreen foliage create a calm background layer for the substantial green crown and scarlet autumn colour
Polystichum setiferum — its soft evergreen rosettes retain green winter structure and quietly support the substantial green crown and scarlet autumn colour

Care at a glance

Light

Morning sun or bright partial shade, sheltered from fierce afternoon sun, reflected heat and drying winds.

Watering

Water thoroughly when the upper layer begins to dry, maintaining even moisture without waterlogging; check pots more frequently in hot weather.

Climate & hardiness

Deciduous and hardy in winter cold; fresh growth benefits from shelter against late frost, hot dry air and extreme summer exposure.

Safety

An ornamental plant, not food. It is not intended for consumption; place it away from children or animals that tend to chew plant material.

Detailed careComplete care guideLight, microclimate, ground planting, pots, growing medium, watering, feeding, pruning and the winter cycle

Light & microclimate

Morning sun or bright partial shade, sheltered from fierce afternoon sun, reflected heat and drying winds.

Planting in the ground

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.

Growing in a pot

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. Check the available root space periodically and move to a larger pot when needed; pot-grown size depends on root space and care.

Watering & cool roots

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.

Feeding & clean foliage

A light application of balanced fertiliser in early spring is usually sufficient. Avoid excessive nitrogen and late feeding, which encourage soft new growth.

Pruning & the winter cycle

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.

Development over timeFrom a young Acer to a broad rounded crownCareful establishment gradually gives way to characteristic natural branching and increasingly rich seasonal changes.

First establishment

After planting, new growth may be restrained while the root system settles. Even moisture and a sheltered microclimate matter more than rapid extension.

The natural habit becomes clear

As the main shoots branch, the plant gradually develops a large upright crown with a rounded outline. Its natural line is most attractive when it is not clipped into a rigid shape.

A mature seasonal rhythm

With maturity it repeats its distinctive colour cycle each year: rich green from spring through summer and brilliant crimson in autumn, followed by natural leaf fall.

Mature form & dimensions

Maturity 10–20 years

Height 2.5–4 mSpread 2.5–4 mLarge upright crown with a rounded outline

Strong branches open into a rounded crown with broad, deeply lobed leaves.

Form through time

Deciduous

Spring → summerBroad green leaves

WinterThe same branching after leaf fall

The leaves fall naturally in autumn. Winter reveals the woody framework that will support new growth the following spring.

What to expect after planting: As a garden guide, it can reach about 2.5–4 m in height and spread over 10–20 years. Older trees in favourable conditions can exceed this height, so allow room for the crown to continue developing.

History & origin Cultivar origin An old Japanese selection with a distinctive autumn signature

‘Osakazuki’ comes from Japan’s long tradition of selecting maples and was already known in the nineteenth century. Its introduction to the trade dates to 1882, well before most of the modern cultivars familiar today.

The lasting attraction is the contrast between its large green leaves and intense autumn red. Through successive generations of cultivation, this old selection has retained its place as a classic Japanese maple valued for its autumn display.

Greenleaf for Plant NerdsScience nobody asked forBotanical details for anyone curious about what lies behind the plant’s appearance

Seven lobes, one continuous blade

The large leaf of ‘Osakazuki’ usually divides into seven broad lobes with toothed edges. Its main veins radiate from the base, creating the hand-shaped structure reflected in the name palmatum.

How crimson develops

In autumn, green chlorophyll breaks down while anthocyanins give leaves red and purple tones. The balance of pigments, light and temperatures influences the result, so the crimson of ‘Osakazuki’ does not have exactly the same intensity every year.

Frequently asked questions

Six practical answers covering light, seasonal colour, pots, mature size, pruning and winter leaf fall.

01How much sun will it tolerate in Greece?

Morning sun or bright partial shade, sheltered from fierce afternoon sun, reflected heat and drying winds. A sheltered microclimate matters just as much as the number of hours of light.

02Why is Osakazuki green in summer?

The cultivar naturally remains clear green for much of the season; its famous crimson develops as temperatures fall in autumn.

03Is Osakazuki suitable for a large pot?

It can grow for years in a large outdoor pot with free drainage and even moisture. Check the available root space periodically and move to a larger pot when needed; pot-grown size depends on root space and care.

04Will the crown of Osakazuki keep growing?

It develops into a small tree or large shrub with a broad crown. The indicative dimensions above help with initial planning, but older trees with ample root space can grow taller.

05Does it need pruning to hold its shape?

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.

06Is it normal for the tree to be bare in winter?

Yes. It is deciduous and sheds its leaves in autumn after completing its colour cycle. Fresh growth returns in spring.

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Acer 'Osakazuki'® premium 19cm

Acer 'Osakazuki'® premium 19cm

Acer palmatum ‘Osakazuki’®

What makes it special

Colour in successive chapters

Foliage that rewards a closer look

A silhouette with design value

Room for the crown

Combinations that work

Care at a glance

Light

Watering

Climate & hardiness

Safety

Light & microclimate

Planting in the ground

Growing in a pot

Watering & cool roots

Feeding & clean foliage

Pruning & the winter cycle

First establishment

The natural habit becomes clear

A mature seasonal rhythm

Mature form & dimensions

Form through time

Seven lobes, one continuous blade

How crimson develops

Frequently asked questions

Acer 'Osakazuki'® premium 19cm — Care & Tips

We take care of the packaging!

With specially designed boxes, we ensure that the plants will reach you intact, no matter what they encounter on the way!

All plants in 3L pots or larger are placed in individual boxes that secure the plant at the base of the pot, preventing it from tipping over.

The cardboard used for the boxes is specially made to provide resistance to potential impacts during transport.

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