The tree rose refers to the cultivation of the Chinese rose tree with dry, crowned and tree-like shapes through artificial gardening techniques. It continues the characteristics of multiple flowers in the Chinese rose. However, after the planting of many tree-like rose seasons, it not only failed to extend the characteristics of the rose, but even to the point of no flowering. According to the author's observation, understanding, and exploration of the tree rose for many years, the reasons are summarized as follows.
First, lack of light, poor ventilation
As we all know, the Chinese rose is a strong positive flower of joy and the tree rose is no exception. If the plants are given insufficient illumination, poor ventilation, or excessive shading, the branches of the rose tree will become slender, the leaves will become thinner, and the nutrient accumulation will be poor. This will eventually lead to poor plant growth, less flowering and small flowers, dark flowers, and flowering periods. Shorter and so on.
Second, undernutrition or imbalance
Since the rose-like flowers of the tree have multiple flowering characteristics in a year, the requirements for nutrition are relatively higher than other flowers. During the entire growing season of the tree-like rose, it is appropriate to chase several times more fertilizer, that is, to chase the fertilizer once after each flowering in the tree-like rose to allow the rose plants to recover as quickly as possible. Pay attention to the proportion of nitrogen, phosphorus and potassium in topdressing, not just applying a single nitrogen fertilizer or phosphorus, potassium fertilizer, otherwise it will cause only long branches and leaves or not normal pregnancy buds and other symptoms.
Third, the lack of reasonable trim
Because the flowering habits of the rose are the formation of flower buds at the top of the annual branches, it is necessary to increase the number of shoots by short cuts during pruning. However, the number of shoots is not as good as possible. Adjust the ventilation and light transmission of the plants while increasing the number of shoots. In this way, the plant can be promptly transferred to the reproductive growth state, and the occurrence of pests and diseases can be appropriately reduced. In the flowering and growing season, light shear treatment is generally adopted, and it is shortened and renewed in the winter. The buds on the roots and stems of the tree rose must be removed at any time, otherwise they will consume more nutrients, and ultimately weaken the plant growth and affect the plant buds and flowers.
Fourth, pests and diseases
Due to the invasion of pests, the branches and leaves of the tree rose are damaged, and the effective leaf area of ​​photosynthesis is reduced, which results in the weakening of the whole tree vigor. The main diseases are powdery mildew, black spot, etc., and are usually sprayed with 50% carbendazim 800 times solution or 70% thiophanate-methyl 600 times solution. The main insect pests include three-leafed rose buds, rosettes, and larvae of Spodoptera litura, which can be used to control 48% of Loxen 1000 times or 90% trichlorfon crystals 1000 times.
V. Variety characteristics
The number of tree rose blossoms is also determined by the characteristics of the varieties, so it should be selected as much as possible varieties of flowers, such as the crown is Fenghua Rose varieties are more likely to flower.
Sixth, late incompatibility
The general tree rose is grafted and nurtured. Therefore, there is a certain difference between the scion and rootstock, especially in the late grafting incompatible varieties, poor growth status, eventually affecting the plant flowering, and some do not flower, or even gradually died. Therefore, as far as possible, you should pick and breed affinities.
In short, as long as adjustments are made to solve the above problems, the tree roses will surely grow as long as possible, and the flowers will surely grow more and more.
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