Detailed Guide to the Care Methods and Techniques for Potted Blue Plumbago (Plumbago auriculata)

  I bought a pot of Taiwan blue plumbago (Plumbago auriculata); it was very beautiful and attracted a bunch of neighbors to grow this flower too. After all these years, my mother plant has grown more and more luxuriant, and the cuttings have spread far and wide. But the neighbors' blue plumbago has not grown very well; they do not know how to care for blue plumbago, the leaves are yellow, and the plants are very unhealthy. Yesterday I helped a neighbor prune the blue plumbago, and it seems very necessary to write this growing experience.

  Blue plumbago has emerald-green leaves and elegant flowers, giving a cool feeling in the hot summer, and it can be potted to decorate rooms and balconies. Mature plants have drooping branches, making them more suitable for large container combination plantings. Many people do not know how to care for blue plumbago. This article introduces the cultivation methods and precautions for blue plumbago.

  [Propagation]

  Blue plumbago is propagated by cuttings. In spring or summer, select 8-10 cm branches as cuttings, insert them in culture soil, cover with plastic film, and place in a bright place. After roots grow, remove the plastic film and begin cultivation.

  [Temperature]

  Blue plumbago likes warmth and is not cold-tolerant. The optimal growth temperature is 25°C, and the minimum winter temperature should be above 7°C.

  [Light]

  The plant likes light and can also tolerate shade. It should be placed in a bright place, receiving several hours of direct sunlight each day, but do not expose it to scorching sun. During overwintering, it is best to let it receive a little more sunlight.

  [Watering]

  During the vigorous growth period, blue plumbago needs a lot of watering, and the environment around the plant should be kept moist. You can spray water on it or place the flower pot on wet stones. In winter, reduce watering, and the potting soil does not need to dry out completely.

  [Fertilizing]

  During the growth period, blue plumbago needs regular liquid fertilizer, fertilizing once a week during the spring and summer growing seasons.

  [Repotting]

  Blue plumbago should be planted in well-drained soil. Repot in spring. If repotting is not necessary, take the plant out, prune it appropriately, and then replant it back into the original pot with fresh culture soil.

  Precautions:

  Blue plumbago grows at the foot of low mountains and on flat land. It likes warmth and is not cold-tolerant. In North China and other temperate regions, it is cultivated as a warm-climate flower. The optimal growth temperature is 25°C. It likes light and is slightly shade-tolerant. It should not be exposed to scorching sun. It requires a moist environment; dryness is unfavorable to its growth. It is not drought-tolerant and should be grown in sandy loam rich in humus and well drained.

  Blue plumbago can bloom only on branches grown in the current year, so it should be pruned every spring, cutting off weak branches and the 213 main stems. New branches growing from old stems will soon bloom.

  If blue plumbago sprouts weak branches and buds in spring, you should pay attention to the following aspects:

  1. The temperature is too high during winter and spring dormancy. Blue plumbago is not cold-tolerant and needs to be above 7°C for overwintering; it should not be too high, otherwise the plant will sprout new shoots too early. New branches that sprout too early are very weak, which is unfavorable for the plant's later growth and flowering. During dormancy, place it indoors, and whenever the temperature is high, open doors and windows for ventilation to maintain a suitable temperature.

  2. Repot in spring. Each spring, potted plants should be repotted once, cutting off excess roots and old roots, and replacing the soil with culture soil mixed with organic fertilizer, so that spring branches grow stoutly and flowering is favored.

  3. Lack of fertilizer. In addition to applying base fertilizer when repotting, fertilizer should also be applied once every half month during the growth period. After sprouting, fertilize mainly with nitrogen fertilizer, which helps branches grow stoutly.