The walnut tree is well-liked for its impressive size and beautiful blooming. Its nuts, from which we can extract and produce oil, are edible. It is a very decorative tree and its wood can be used in woodworking. For the walnut tree to mature well, it must be cared for under optimum conditions, especially during the early years of growth. Once it reaches adulthood, care will no longer be essential.

At the time of planting, the seedlings of the walnut tree are still fragile. To develop well, it needs regular watering, frequent supplies of fertilizer and a staking. It must also receive sufficient sunshine and a large space to grow. If all these conditions are met, it will grow rapidly and reach a large size very quickly. Therefore, it should be planted a good distance from the house, and in an open space where it can grow in height and width without being hindered.  The walnut tree can reach about 25 to 30 metres in height. As an adult, it will no longer require much care. Cropping and pruning will rarely be carried out, and only in exceptional cases.

How to plant the walnut tree?

The walnut tree is one of warm and temperate climates. Periods of cool facilitate its rooting. Spring and autumn are the seasons most suitable for planting. However, the walnut tree can also be grown in summer, in which case it is best to plant it during periods of low temperatures. The most appropriate method is transplanting. To achieve this, we will use year-old seedlings for hybrids, and those of two years for common varieties. In addition, prior to cultivation, it is essential to prepare the ground. Organic enrichment and fine quality soil should be added to the land, with each component taking 1/3 of the volume.  Subsequently, the blend must be thoroughly mixed to obtain a homogeneous soil structure. Prior to putting the walnut tree in the ground, its diseased roots will need to be removed with a pair of clippers, and all of its branches will be trimmed to the trunk.

How to maintain a young walnut tree?

After planting the young tree, the ground will be mulched to maintain the freshness necessary to root development.  Similarly, it must be watered frequently to sustain the seedling’s growth. During the tree’s development, place a stake for support and prune as needed to correct its shape. Given that the walnut tree is greedy, it requires a regular supply of fertilizers. But this is no longer necessary once maturity is reached and is even advised against, as it may be harmful to the tree and the future harvest. The walnut does not like being trimmed and its pruning is only necessary when it becomes too big. However, it may carry a heavy load of dead wood, as its branches are quite numerous, intersecting and growing downward or inward. In such situations, we will be forced to remove excess weight by cutting the branches around the month of September. We then use Stockholm tar or grafting wax to cover the wounds and protect them.

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Published in Large trees by Alexander on 04 Jul 2011