How to propagate Buddleja

Seed propagation of Buddleja

Generally, sowing and propagation are carried out in autumn. The seeds of the Buddleja sibiricum collected that year are sown on the prepared seedbed, raked flat, and covered with about 2-3 cm of soil, or they are sown in furrows with a row spacing of about 35 cm and a furrow depth of about 3 cm. The seed rate is 1 kg per mu. Mix the seeds and wood ash and spread them evenly in the trench. Cover the soil to a depth of about 0.5 cm, then cover with grass and keep the seedbed moist at all times. After germination, the grass cover can be removed and the seedlings can be raised for 1-2 years. When the seedlings are about 1 meter tall, they can be transplanted. After digging out the seedlings, the roots should be properly pruned. Dig holes and transplant them according to a row spacing of 2 cm and a plant spacing of 2 cm. Plant one seedling in each hole, cover the soil and compact it, water it to fix the roots, and apply enough base fertilizer.

Propagation of Buddleja by division

The roots of Buddleja buddleja have a strong germination ability. When transplanting, one plant can be divided into 2-3 plants for transplanting. Control the reasonable distance, generally 1 meter between plants and 2 meters between rows.