Bonsai Training Information

Acer ginnala
Acer Ginnala, Amur Maple

A small tree to 10 meters tall with narrow compact crown and cultivated in many parts of Europe and North America as a Boulevard tree for its gray bark, reddish brown twigs, light to lemon coloured spring foliage and flamboyant red autumn foliage. All the characteristics which make it a Bonsai which is appreciated through out the year.


Formal upright, Informal Upright, Slanting, Cascade, Semi-cascade, Rock-over-root, Clasped-to-rock, Twin-trunk, Group planting, Saikei




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


Daily through out the growing season. Do not let plant dry out as the leaf tips dry out quite rapidly. During the hotter summer days you may need to water between 2 and 3 times a day.


Once every week at the start of the growing season and then every two weeks.

Leaf and Branch Pruning:

Pruning is the primary means of shaping. Pruning and leaf trimming can be used to induce back budding and branches to grow where none grow and to manage valuable open spaces to maintain a healthy plant growth. 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:

In spring or early autumn; if repotted in autumn remember to protect tree in winter. Younger trees grow quite profusely and hence need to be repotted every two years older trees only when necessary usually every 4 to 5 years. Younger bonsai may be bare rooted if necessary, however, larger and older specimens are best not bare rooted, do not remove more than 30% of soil around the earth ball. A free draining soil with 3 parts Akadama and 1 Part Pumice.


Wire in autumn when tree is dormant and use a wrap to protect the delicate bark. Don't not leave wire on for too long as it will scar the delicate bark.


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