Overwintering temperature of Osmanthus fragrans grafted with tassel

Tassel, also known as April snow, is a relatively rare and precious protected tree species. In summer, trees will be covered with white flowers, such as snow cover, clear and pleasant. Tassel can not only be planted in pots, but also make bonsai stumps, and it is also a high-quality rootstock for grafting sweet-scented osmanthus. Because the tassel tree has a strong ability to adapt to the growth environment, and the life span is also very long.

Bonsai makers often cultivate it as potted plants, and then make it into bonsai, especially sweet-scented osmanthus bonsai, which has a strong affinity. In Shandong area, people often use tassel grafting to propagate sweet-scented osmanthus, and the effect is excellent. Using tassel as the rootstock of grafting sweet-scented osmanthus is mainly achieved by means of grafting in the growing period, and should not be carried out in the rainy season or summer days.

And sweet-scented osmanthus is a kind of sun-loving tree species, and it also has the characteristics of heat resistance and high temperature resistance, even in the hot summer, there is no need to take shading measures for it. Moreover, the flower bud formation season of sweet-scented osmanthus is from June to August in summer, which needs to provide sufficient light every day. Even in the high temperature environment of 30-35 °C, the budding can be completed normally, and the flowering rate is not low.

But after all, sweet-scented osmanthus is not a cold-tolerant plant, after entering winter, especially in the severe winter, the original in order to ensure a smooth winter, should take timely measures to keep warm. So, at what temperature can Osmanthus fragrans survive safely in winter? Especially in the north where the temperature is ultra-low, how can we ensure that the plants can survive the winter safely?

Considering the poor cold tolerance, it is usually necessary to ensure that the growing environment of potted plants should not be lower than 4 °C, that is to say, the overwintering temperature of tassel grafted sweet-scented osmanthus should be kept above 4 °C. In order to enhance the ability of heat preservation and cold protection and ensure that the plant can survive the winter smoothly, the pot should be covered with plastic film in the outdoor environment, which can also play the role of moisturizing.

Of course, if it is convenient, you can also move the potted plants indoors to keep warm and protect against cold, because once the plants are subjected to severe frost, it is likely to cause defoliation in the coming spring and affect normal flowering. Therefore, for potted sweet-scented osmanthus, winter heat preservation measures are essential.

Time: 2019-05-30 Click: