How to raise seedlings of Lagerstroemia indica?

Lagerstroemia indica is a deciduous shrub or small tree belonging to Lagerstroemia of Lysimachiaceae, also known as Hundred Days Red, Prurigo Tree, Full House Red and so on. Lagerstroemia indica has beautiful posture, long flowering period and bright flowers, which mostly bloom in summer when woody flowers bloom less. It can be planted beside roads, courtyards, Chi Pan, lawns, etc., and potted for viewing in the north. It can also be used as bonsai and cut flowers.

(1) sow and raise seedlings. Pick mature capsules in autumn, dry them, crack them, take out the seeds and store them dry. Sow in spring, soak the seeds in warm water for 4 hours before sowing, and accelerate germination with wet sand. Sufficient seeds are planted in seedbeds and sown or sown in open spaces. If there are not enough seeds, sow them carefully in the greenhouse. The covering fine soil sown indoors is about 1cm. When there are 65,438+0 ~ 2 pairs of leaves, transfer them into a container with a diameter of about 8 cm for culture. When they grow up, they will be moved to the nursery. If the north can't spend the winter in the open field, move them into containers with a diameter of 20 ~ 27 cm for cultivation. Seeded seedlings bloom in the second year. If you want to cultivate a tree, you should pay attention to cultivating the trunk and cut off the side branches below.

(2) Cutting propagation. Cutting with hard branches in spring. Before germination, select 1 year-old robust branches as cuttings, and cuttings with a diameter of 0.5 ~ 1 cm are the easiest to take root. The cutting length is about 15 cm, and the lower end is cut into a horseshoe-shaped oblique mouth, and the upper end is cut into a flat mouth. In order to improve the survival rate, the cutting substrate was soaked in 50 mg/kg NAA solution for 65438 02 hours. According to the row spacing of 10 cm and the plant spacing of 5 cm, the cutting depth is 3/4 of the cutting length, and 1 ~ 2 internodes are left on the ground.

Or use semi-lignified branches as cuttings in summer, cut into a length of about 15 cm, remove the lower leaves, leave 2 ~ 3 upper leaves, cut in an open seedbed, and use plastic film and sunshade net to keep moisture and shade.

Branches more than 3 years old can also be used for cutting propagation.

(3) Propagation by ramets. Branching plants before germination in spring. Dig out the new buds around the mother tree, pay attention to keep the fibrous roots, apply plant ash to the wound, and plant directly.

(4) Layered propagation. In the season of vigorous growth, choose tufted plants, cut branches into rings, and then bury them in the soil. The pressed part is kept moist and easy to take root.