Precautions for Cleaning the Rose Garden
A comprehensive explanation of the precautions for cleaning the rose garden, the relevant experience in flower planting is introduced as follows:
It is now the time to clean the rose garden with lime sulfur, then the question arises, can hydrangeas be sprayed? Can绿化 trees be sprayed? In our friends' gardens, there are often many kinds of plants. Which ones can be sprayed with lime sulfur, and which cannot?
Precautions for Cleaning the Rose Garden
Roses have many diseases and pests during the growing period, such as black spot disease, red spider mites, aphids, powdery mildew, etc. The spores of these diseases and eggs of pests often live in fallen leaves, dead branches, and soil during winter. If the spores and eggs can be killed during the dormant period of the roses in winter, then the roses will have fewer diseases and pests in spring.
Lime sulfur, as a low-toxicity strong alkaline pesticide, is effective against most bacteria and pests and their eggs. Therefore, we use lime sulfur to clean the garden in winter.
However, cleaning the garden is not just about spraying lime sulfur. It is also necessary to tidy up our garden, removing fallen leaves and dead branches to reduce the hosts for bacteria and pests.
Lime sulfur, as a strong alkaline pesticide, often causes burns on the leaves when sprayed on plants. When cleaning the garden, two points need special attention.
1. - - Dilution Concentration - -
The efficacy of lime sulfur is greatly related to temperature. At high temperatures, the medicine is more active and effective, which can easily burn the leaves. At low temperatures, the medicine releases slowly and lasts longer. Therefore, the instructions for using lime sulfur state that it should only be used on deciduous plants and not on green leafy plants.
In practice, however, we can adjust the concentration according to the temperature. For example, in April, it can be diluted 1000 times to effectively treat rose powdery mildew without burning the leaves.
And in winter, at temperatures around 10 degrees, a concentration of 150-200 is generally used. When the temperature is below 5 degrees, a concentration of 50 times can be used, but it should be kept away from green leafy plants. If you are interested in the use of lime sulfur in different seasons, you might want to explore it. When red spider mites and powdery mildew are difficult to control, using lime sulfur may bring a surprise.
2. - - Spray in All Directions but Avoid Plants That Should Not Be Sprayed - -
Where should lime sulfur be sprayed? Can it be poured into the roots? Many flower friends have asked this question. I want to emphasize again that lime sulfur can only be sprayed on the soil surface and cannot be poured into the roots because it is strong alkaline, which can severely affect the pH of the soil.
When using lime sulfur in winter to clean the garden, it should be sprayed in all directions, making sure to cover the branches, leaves, and soil surface of the roses. However, the use of lime sulfur in the garden should be cautious.
For example, hydrangeas have large and thin leaves. When they encounter strong alkaline pesticides like lime sulfur, their leaves are easily burned. If the hydrangeas have shed their leaves and the buds are plump, spraying lime sulfur will have little effect on the spring germination and flowering of the hydrangeas. But if the hydrangeas have already started to germinate, they should not be sprayed.
Generally, plants with large or thin leaves should not be sprayed with lime sulfur, such as旱金莲 (day lilies), 矾根 (acer), and 青菜 (spinach). Can lime sulfur be sprayed on绿化 trees? If they are deciduous trees, they can be sprayed. Trees with thick and leathery leaves can also be sprayed, but young and thin-leaved plants should not be sprayed, or their leaves may burn.
By the way, except in the cold northern regions, roses are not yet at the time for winter pruning. Please do not prune them yet.
This article shares the precautions for cleaning the rose garden and what to pay attention to when using lime sulfur to clean the garden. These two points should be taken seriously and are provided for everyone to learn and understand!