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Érable japonais lacinié orange-rouge
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Orangeola Japanese Maple (Acer palmatum var. dissectum ‘Orangeola’). ( Acer palmatum var. dissectum ‘Orangeola’) forms a small deciduous tree with arching and weeping branches. Its finely dissected leaves emerge orange-red in spring, mature to greenish-red during summer, and welcome new orange-red growth creating a characteristic bicolour effect. In autumn, the entire crown turns red then fiery orange. An untrimmed specimen can reach approximately 2.4 m in height by 3 to 3.7 m in width. This cascading silhouette and succession of colours clearly distinguish Orangeola from uniform green or purple Japanese maples.
In Quebec, plant Orangeola in a sheltered zone 5 microclimate, in morning sun or bright partial shade. It tolerates more sun than several red cutleaf maples when the soil remains cool, but dry wind, reflected heat, and a desiccated root ball can scorch its delicate leaves. Choose a humus-rich, slightly acidic to neutral, consistently moist, and very well-drained soil. Water deeply during the first two seasons and during droughts, keep the crown and graft union visible, then apply 5 to 8 cm of mulch without touching the trunk. Keep it away from de-icing salt.
Use this Japanese maple as a specimen near a terrace, above a low wall, in a sheltered courtyard, a cool rock garden, or an Asian-inspired garden. Reserve its adult width to avoid shearing the cascade. Small reddish spring flowers can produce discreet samaras, but the changing foliage remains the main attraction. Prune lightly after leaves unfurl to remove dead wood, a crossed branch, or a shoot from the rootstock; do not shorten all tips. The Asian species is not native to Canada: accompany it with regional plants adapted to partial shade to enrich the ecological value of the planting bed.
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