also called Japanese elm, in nature this deciduous plant reaches a height of 30 meters; it has medium-sized leaves, green, serrated, very dense, roundish foliage; brown bark, green flowers, insignificant. The leaves in autumn, before falling, turn yellow-orange. Quite indicated as a bonsai for beginners, it does not offer any particular problems of cotivation.
it is pruned vigorously in autumn, raising the branches that come out too much from the thick of the foliage; from the spring to the end of the summer trim the buds, leaving two or three pairs of leaves. If the plant is healthy it is possible to decrease the size of the leaves by defoliating it between May and June. The wire can be applied throughout the year.
Display and watering
Exhibition: the zelkova like positions in full sun, outdoors all year round. During the hottest time of the year it is advisable to shade it. If the winter is particularly hard to repair the vase and the roots with non-woven fabric.
Watering: does not require abundant watering, wait for the soil to dry before supplying additional water; in winter water every month. In the vegetative period add to the irrigation water of the fertilizer for bonsai every fortnight.
Japanese elm - Zelkova: Other tips
Soil: it does not have many needs as regards the soil, to prepare an optimal compost mix a part of peat, a part of sand and three parts of clay. Repot every two or three years, at the end of winter, pruning the roots abundantly.
Multiplication: the fruits can be sown in late winter, keeping them at a moderate temperature until germination has taken place. In spring you can take green cuttings, to be rooted in containers filled with a mixture of peat and sand in equal parts.
Pests and diseases: it is not a plant particularly subject to the attack of pests and diseases, sometimes it can be hit by green aphids.