Can Cosmos Be Planted in Saline-Alkali Soil? Key Planting Points Explained

Cosmos gets its name because it originated in Mexico and belongs to the Asteraceae family. And after being introduced to China, it has always been called cosmos without ever changing. As people gradually came to know this perennial herbaceous plant, especially its outstanding ornamental effect, it has been widely used in the country. In addition to applications in flower seas and gardens, it can even be seen grown in pots in many homes.

From the widespread use of cosmos in our country, we can see that this flowering plant has been greatly promoted, and it is currently grown all over the country. It is clear that this is not only a highly ornamental flowering green plant, but also should be relatively easy to grow, otherwise how could it be so widely used?

In fact, whether a plant is suitable for growing in a certain type of soil requires us not only to be familiar with the growth habits of the plant, but also to understand the influence of soil quality on it. Cosmos has the characteristic of tolerating poor soil, but at the same time it also likes fertile, loose soil with good permeability. It is clear that cosmos does not have high requirements for the soil environment, and its adaptability to the soil environment is also relatively strong. Its growth condition is mainly affected by temperature; as long as temperature protection can be provided, it can generally maintain good growth. Therefore, even when planting cosmos in saline-alkali soil, it is often still possible.

Practice has proven that cosmos does not have very high requirements for pH value, which means that even if it is planted in saline-alkali soil, as long as a suitable temperature environment is provided, it can often still maintain good growth. Moreover, if it is planted as a flower sea, as long as the plants can adapt to the current saline-alkali soil environment, they can likewise bloom into a beautiful flower sea. Therefore, cosmos can grow normally in saline-alkali soil, and everyone does not need to worry that potted cosmos in their own saline-alkali soil will show poor growth.

However, in order to make the plants grow better, there is generally no need to use excessively poor soil for growing them. Through understanding the growth habits of cosmos, we know that the growth condition of cosmos is mainly affected by temperature changes. After all, cosmos is neither heat-tolerant nor cold-tolerant. When the temperature reaches above 35°C, flowering is often affected. Generally, providing the plants with a temperature environment of 15°C-30°C often well satisfies the temperature requirements of cosmos.