Bonsai Training Information

Acer rubrum
Canadian Red Maple, Swamp Maple, Soft Maple

Tree to 20 meters tall with narrow compact crown. Bark gray and thin, becoming furrowed into long narrow scaly ridges on older trunks and branches. Twigs slender, reddish brown, glabrous, with small dark red blunt buds.


Formal upright, Informal Upright, Slanting, Cascade, Semi-cascade, Literate, Broom, Rock-over-root, Clasped-to-rock, Twin-trunk, Clump, Sinuous, Straight Line, Group planting, Saikei




Full Sun - but shield from direct sun in hot summers as it can sorch the leaves.


Daily through out the growing season. Make sure water does not fall on the leaves as they will sorch. Do not let plant dry out, especially on grafted stock as the plants very quicky die above the graft and revert to the root stock.


Once every week when growing season starts and then every two weeks.

Leaf and Branch Pruning:

Pruning is the primary means of shaping A. rubrum. Pruning and leaf trimming can be used to induce branches to grow where none grow now, and to create valuable open spaces. Trim new growth to one or two pairs of leafs in spring. Pinch of large leafs through out the growing season.

Re-potting & Growing Medium:

Best to do root pruning and repotting in autumn. In yonger trees once every two years and then as necessary. When repotting younger specimens may be bare rooted, however, larger and older specimens must be earh balled, remove at most 30% of earth around earthe ball.


In spring on woodier branches, use a wrap to protect delicate bark. Dont not leave bark on for long as it will scar the delicate bark


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