The rose leaves are lush green but all the shoots are blind - what should I do?

This is day 892 of Lanyao's daily original articles

Rose cultivation series articles: No. 89

For the past two or three months, Lanyao has been sharing articles about rose cultivation. If you have been following and reading Lanyao's articles, you should already be fairly confident about rose cultivation.

However, for beginner gardening friends who only occasionally read Lanyao's articles, many problems still arise during rose cultivation. Today Lanyao will talk about the issue of blind buds in roses, which is also a question raised by gardening friends in Lanyao's reader group.

This gardening friend's rose has developed a large number of blind buds. The leaves look very healthy, but as they grow, they turn into blind buds with no flower buds forming.

From the photos we can also see that the rose leaves look very healthy, with no obvious pests, diseases, or signs of nutrient deficiency.So what exactly is causing this phenomenon?To find the cause, we have to review the care process. Roses will not develop blind buds for no reason; there must be a problem with our care methods.

Possible causes of blind buds:First, Lanyao will explain several possibilities that cause blind buds.1. Nutrient deficiency:On the surface, this rose does not show yellow leaves or weak growth from nutrient deficiency, and overall it looks healthy. But Lanyao reminds everyone: the most fundamental cause of all blind buds is malnutrition. How the malnutrition was caused is the key to solving the problem.

Obviously this rose has no obvious symptoms of nitrogen deficiency or trace element deficiency. This reader and gardening friend also applies Flower Duoduo No. 1 once a week. (So it looks very healthy to me.)2. Lack of lightBesides insufficient fertilization, insufficient light can cause the rose's photosynthesis rate to be too low, leading to malnutrition. But this gardening friend grows the plant outdoors, so clearly there is no lack of light either.3. Pests and diseases

Pests and diseases can cause rose plants to grow weaker and produce blind shoots. But clearly, this gardening friend's rose has no pests or diseases.4. Trace element deficiency

Roses have a relatively high demand for some secondary elements, especially when grown in pots. If the soil mix is too simple, trace element deficiency is very likely to occur. Severe trace element deficiency usually shows on the leaves, but mild deficiency may not necessarily show obvious symptoms. This gardening friend applies Flower Duoduo No. 1 at a relatively high frequency, so the three major nutrients are not lacking, which is why it looks relatively healthy. But if calcium fertilizer is lacking...

Calcium directly affects the growth of bud points, and the tips of rose branches are bud points. If there is calcium deficiency, it is quite normal for branches to develop blind buds as they grow.

In addition, rose branches consume more nitrogen fertilizer during growth, but in the later stage of branch growth, when they need to form flower buds, they need more phosphorus and potassium fertilizer. Flower Duoduo No. 1 is a general-purpose growth fertilizer. If the base fertilizer also has low phosphorus and potassium content, then insufficient phosphorus and potassium fertilizer is also possible.

Therefore Lanyao's suggestion is:First lightly prune the blind shoots, cutting them off with one or two leaves, then increase the application of phosphorus and potassium fertilizer (Flower Duoduo No. 2 can be used), and appropriately supplement calcium fertilizer. For calcium fertilizer, calcium gluconate can be diluted and sprayed on the leaves.

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