Reasons for the few or no flowers blooming on potted rose trees
Here are some topics related to the cultivation of potted rose trees with few or no flowers blooming, with details as follows:
Reasons for few or no flowers blooming on potted rose trees
We know that roses are a type of flower that loves light, and tree-like roses are no exception. If the plant is not given sufficient sunlight, poor ventilation, or excessive shading, the branches of tree-like roses will become thin and long, leaves will become thin, and poor nutrient accumulation will lead to poor growth of the plant, few and small flowers, dull flower color, and short blooming periods. Do you know the reasons for few or no flowers blooming on potted rose trees? Today, our editor will introduce these reasons in detail. Please see the following content:
1. Insufficient or unbalanced nutrients
Because roses have the characteristic of blooming multiple times a year, their requirement for nutrients is relatively higher than that of other flowers. During the entire growing season of tree-like roses, it is necessary to apply more fertilizer, that is, apply fertilizer after each bloom to help the rose plant recover its growth as soon as possible. When applying topdressings, pay attention to the proportion of nitrogen, phosphorus, and potassium, and do not apply only a single type of nitrogen or phosphorus and potassium fertilizers, as this can cause the plant to grow only leaves or fail to form flower buds normally.
2. Lack of proper pruning
Since the flowering habit of roses is to form flower buds at the top of one-year-old branches, pruning should be done by shortening to increase the number of branches. However, more branches are not always better. While appropriately increasing the number of branches, it is important to adjust the ventilation and light penetration of the plant. This can promote the plant to transition to the reproductive growth stage in a timely manner and also reduce the occurrence of diseases and pests. During the flowering growth season, light pruning is usually done, and then in winter, the branches are cut back and renewed. Suckers from the roots and main stem of the tree-like rose plant should be removed at any time, as they can consume additional nutrients and weaken the plant's growth, affecting flowering and bud formation.
3. Pest and disease damage
Due to the invasion of pests and diseases, the leaves of the tree-like rose plant are damaged, the effective leaf area for photosynthesis is reduced, and the overall plant vigor is weakened. The main diseases include powdery mildew and black spot, which can be controlled by spraying 50% carbendazim 800 times liquid or 70% thiophanate-methyl 600 times liquid. The main pests include rose sawfly, rose aphid, and oblique-striped caterpillar, which can be controlled by using 48% imidacloprid 1000 times liquid or 90% phoxim crystal 1000 times liquid.
4. Variety characteristics
The number of flowers on potted rose trees is also determined by the variety characteristics, so it is better to choose varieties that bloom more, such as the floribunda rose variety, which is easier to bloom profusely.
5. Poor aftercare
Usually, potted rose trees are cultivated through grafting. Therefore, there is some difference between the scion and the rootstock, especially for varieties that are not compatible in the later stages of grafting, which can lead to poor growth and affect flowering, with some plants not flowering or even gradually dying. Therefore, it is best to choose compatible varieties for cultivation.
The above is a sharing from the potted rose tree cultivation base. For wholesale procurement of Nanyang roses, look for us!
The comprehensive knowledge explanation of the reasons for few or no flowers blooming on potted rose trees introduced above hopes to help you.