Japanese Maple Bonsai: Detailed Guide to Creation Methods and Care Management

(I) Botanical Knowledge

Belongs to the family Aceraceae, genus Acer. Deciduous small tree or shrub-like, branches slender and smooth, first-year twigs brownish-red. Simple leaves opposite, palmately 7-9 deeply lobed, lobe margins with double serrations, young leaves greenish, turning red in autumn, brilliant as morning glow. Small purplish-red flowers form corymbose inflorescences, blooming in April. Samaras relatively small, purplish-brown when mature.

Main Varieties and Forms

1. Red Maple (var. atropurpureum (Venh.) Schwer), leaves red or purplish-red year-round, lobes relatively deep; branches sparse and spreading horizontally, samaras slightly larger than the original species, a common material for bonsai.

2. Feather Maple (var. dissectum (Thunb.) Maxim.), also known as Suoyi Maple, Fine-leaved Japanese Maple. Tree form low and small, branches sparsely spreading and slightly drooping. Leaves 7-11 deeply lobed, almost to the base, lobes narrow and long with pinnate fine divisions, very ornamental.

3. Red Feather Maple (var. dissectum f. ornatum (Carr.) Schwer), also known as Red Fine-leaved Japanese Maple. Leaves purplish-red year-round, otherwise same as Feather Maple.

4. Golden-leaved Japanese Maple (f. aureum Nichols), leaves thin in texture, 7-11 deeply lobed, golden yellow. Japanese Maple is produced in the middle and lower reaches of the Yangtze River basin in China, also in Shandong and Zhejiang. It is distributed in Japan. It is a common ornamental tree species in gardens, and also grows wild in mountainous areas. It prefers light, prefers warm and humid climates, is not very cold-tolerant, and is suitable for growing in humus-rich, fertile and moist acidic or neutral soil. For pot cultivation, avoid west-facing sun and direct sunlight; during high-temperature summer periods, appropriate shading is needed.

(II) Material Sourcing and Cultivation Measures

Artificial propagation: Generally propagated by seeding, grafting can also be used. After samaras mature in October, sow immediately after collection, or store in moist sand stratification until spring of the following year before sowing. Drill sowing with row spacing of about 20 cm, cover with soil about 1 cm thick, cover with rice straw. Sprouts emerge in late March, straw should be removed promptly. To prevent scorching by intense sunlight, build a shade shed in July-August, water to prevent drought, and apply dilute decomposed cake fertilizer water to promote seedling growth. Current-year seedlings can reach 30-40 cm in height, leave in bed for one more year before transplanting. Ornamental varieties such as Red Maple and Feather Maple are usually propagated by grafting, carried out before spring bud break, using 2-3 year old Japanese Maple seedlings as rootstock. Cut grafting or side grafting, needs to be several cm above ground level. After successful grafting, growth is relatively slow, management should be strengthened. If single-bud side grafting is done in summer, the survival rate is higher and seedling formation is also faster. Wild Japanese Maples are mostly tree-like, not suitable for making bonsai; wild seedlings under the forest, dug back and potted, can be processed and shaped into beautiful ornamental bonsai.

(III) Potting Process

Pot selection: Japanese Maple is suitable for relatively shallow oval or rectangular glazed ceramic pots; among them, red-leaved varieties are suitable for grayish-white, light blue, light green, light yellow and other colors, black also has a very good effect. Green-leaved types can use purple, red and other colors.

Soil: Japanese Maple prefers fertilizer and moisture, suitable for fertile, loose and moist slightly acidic soil or neutral soil. For pot cultivation, humus-rich mountain soil or leaf mold can be used.

Planting: Can be done in March in spring or after leaf fall in autumn. When planting, pay attention to letting the root system spread out, do not let it curl up in the pot soil. For precious varieties, strengthen management after planting, keep the pot soil moist, place in a shaded area, and when growth is vigorous, move to a ventilated and well-lit location.

(IV) Shaping Techniques

Processing: Japanese Maple is mostly shaped by combining wiring and pruning. Wiring should use palm fiber, and must be removed promptly, otherwise it easily cuts into the bark. If metal wire is used for wiring, even more care must be taken to prevent the wire from cutting in. Wiring processing is best done during the plum rain period or after leaf fall. The large branches of Japanese Maple can be wired, while small branches should be pruned; generally leave 1-2 nodes on each branch, cut off the front end, so that the two lateral branches that grow form a Y shape, then continue pruning in this way in sequence, finally forming the tree crown.

Tree form: Japanese Maple is suitable for making grouped planting style or forest style. As a single specimen, it can be made into slanting trunk style, curved trunk style and other tree forms. Leaf shape elegant, red and colorful, quite beautiful. For the creation of grouped planting style, attention must be paid to the handling of primary and secondary, sparse and dense, high and low, far and near, etc. One may refer to the layout of grouped planting style for Golden Larch; the difference is that Golden Larch is mostly straight-trunked, while Japanese Maple often has curves, so when grouped planting, attention must also be paid to the direction and degree of trunk curvature, achieving unity and harmony.

Japanese Maple Bonsai Creation and Care Management

Japanese Maple Bonsai Creation and Care Management