How to Prune Blue Plumbago? A Detailed Guide to Pruning Methods

Blue plumbago (Plumbago auriculata) is a perennial upright herb in the genus Plumbago, family Plumbaginaceae. Its flowers are blue and its ornamental period is long, so many people want to grow a pot of it. So, what are the pruning methods for blue plumbago?

1. Pruning methods for blue plumbago

Blue plumbago has vigorous growth and a very long flowering period, so it should be pruned during the growing season and after the flowers fade. During the growing season, the main task is pinching and topping, which can promote more branching in blue plumbago and produce more flowers. After the flowers fade, the main task is removing spent flowers, and also pruning old branches, damaged branches and branches with poor growth trends, which can reduce water and nutrient consumption.

2. How to grow blue plumbago?

1. Soil: Blue plumbago is best grown in sandy loam rich in humus with good drainage, pH 5.5-6.0. You can use peat soil, mix in a little perlite, and also add a small amount of fertilizer to the soil.

2. Temperature: Blue plumbago likes a warm environment, is heat-tolerant and not cold-tolerant. The optimum growth temperature is 25°C, and it can withstand up to 35°C. In the south, it can be grown in the open ground; in the north, it needs to be grown in a greenhouse in winter.

3. Light: Blue plumbago likes light and is slightly shade-tolerant, and it should not be exposed to the scorching sun. In spring and autumn, it can be kept outdoors in the open all day; in summer, it can be appropriately shaded; in winter, it should be placed indoors in a spot with all-day light.

4. Watering: Blue plumbago likes a moist environment, and dryness is unfavorable to its growth. In spring and autumn, water once every three days; in winter, water once a week; in summer, water once in the morning and once in the evening each day. The water temperature is best kept the same as the indoor temperature to avoid alternating cold and heat.

5. Fertilizing: Blue plumbago needs sufficient nutrients during the growing season, so it can be fertilized once every half month; when flowering, fertilizing should mainly use nitrogen fertilizer, with an appropriate addition of some phosphorus and potassium fertilizer.