What is the cold resistance of Delphinium grandiflorum?

Delphinium grandiflorum can tolerate the lowest temperature of 0℃, the suitable growth temperature is 15-25℃, and the overwintering temperature is above 5℃. If you plant delphinium grandiflorum in the field, you can cut off the yellow leaves and cover the soil with straw, hay and film. To raise the ground temperature. Potted plants can be moved to the indoor balcony, and the temperature can be kept above 5℃, which can safely overwinter.

Delphinium grandiflorum is native to Europe and also cultivated in Yunnan-Guizhou-Sichuan area of China. In our daily life, most flowers are blue-purple compatible with gradual changes, just like swallows flapping their wings. It likes a warm environment, is afraid of freezing and is not cold-resistant, and needs to keep warm in winter to grow normally and bloom vigorously.

Cold resistance temperature of delphinium grandiflorum

1, growth temperature

Delphinium grandiflorum likes cool and mild climate and is not tolerant of hot and cold weather. The suitable growth temperature is 15-25℃. Too high or too low temperature will easily hinder the growth of plants.

2. Overwintering temperature

Delphinium grandiflorum likes cool climate and has certain cold tolerance. The overwintering temperature is above 5 degrees. When the ambient temperature is below 5 degrees, the aboveground parts will gradually turn yellow and wither, and the growth will gradually slow down.

3. Low temperature and minimum temperature

Delphinium grandiflorum can tolerate the lowest temperature of 0 degrees. Although it can tolerate low temperature, but the temperature is too low, delphinium can't stand it. If the ambient temperature is below 0 degrees, Delphinium grandiflorum is easy to get frostbite.

Overwintering maintenance of Delphinium grandiflorum

1, ground planting to keep warm: If ground planting of Delphinium grandiflorum wants to survive the winter smoothly, the withered leaves can be cut off after the branches and leaves wither to reduce the consumption of nutrients, and then the soil can be covered with straw, hay and film. To raise the ground temperature and prevent the roots from freezing to death.

2. Overwintering in potted plants: If potted plants can be moved to the indoor balcony, the temperature can be kept above 5 degrees, but it cannot be placed in an environment with too high temperature. You can also choose a sunny place to shelter from the wind, dig a hole and bury the flowerpot in the soil.

3. Water and fertilizer control: When maintaining delphinium in winter, we must pay attention to water control and keep the soil dry. At this time, wet water will aggravate the possibility of freezing roots, and the growth will basically stagnate in winter, so fertilization can be suspended.