Buddleja asiatica is a species of flowering plant in the family Scrophulariaceae, native to central and western China. It is a deciduous shrub growing to 3 m (10 ft) tall by 3 m (10 ft) wide, with ovate to lanceolate leaves up to 18 cm (7 in) long. The flowers are produced in dense terminal panicles 1525 cm (610 in) long, each flower with five violet-blue petals 57 mm (0.20.3 in) long.
Related plant:
Buddleja Davidii Nanho Blue
Related plant:
Buddleja Empire Blue
About soil condition, Buddleja asiatica grows best in well-drained soil and does not tolerate wet conditions. It prefers full sun but can tolerate some shade. The plant will tolerate poor soils but will not flower as well in them.
Just like other Buddleja species, Buddleja asiatica requires full sun to partial shade to thrive. It is a fast-growing, deciduous shrub that can reach up to 15 feet in height. The fragrant, lavender-colored flowers bloom in the summer and attract butterflies.
The temperature condition that is best for Buddleja asiatica is a warm climate. This plant does not like to be in cold weather. If the temperature gets too cold, the leaves of this plant will turn brown and fall off.
Ideal humidity condition for this plant is between 40 to 60%. If the humidity level is too low, the plant will become dry and may drop its leaves. If the humidity level is too high, the plant will become too wet and may start to rot.
For the fertilizer, this kind of plant requires high nitrogen and phosphorus levels in order to grow and bloom properly. The roots of Buddleja asiatica are deep and require plenty of space to grow, so make sure to plant them in an area where they will have plenty of room to spread out.
Pruning is an important part of keeping your Buddleja asiatica looking its best. Pruning helps to encourage new growth and keeps the plant looking tidy. To prune your Buddleja asiatica, start by trimming back any dead or damaged branches. Then, cut back any branches that are growing out of control. Finally, shape the plant by trimming back any straggly branches.
Propagation of Buddleja asiatica is best done through seed, although cuttings can also be used. Sow seeds in spring, lightly covering them with soil. Keep the soil moist until germination, which should occur within 2-3 weeks. Once the seedlings are large enough to handle, transplant them into individual pots and grow them on until they are ready to be planted in their permanent location. To take cuttings, use a sharp knife or pruning shears to take 4-6 inch (10-15 cm) stem cuttings from the tips of new growth. Strip off the bottom leaves and insert the cuttings into a pot filled with moistened sterile potting mix. Keep the cuttings warm and moist until they have rooted, after which they can be transplanted into individual pots.
Usually, the plant growth rate when the plant is young. The plant will grow quickly in its first year, but the rate at which it grows will slow down after that. However, if the plant is well-cared-for, it can continue to grow at a moderate rate for several years.
Common problems for this kind of plant include powdery mildew, root rot, and stem rot. These problems are often caused by too much moisture in the soil or around the plant. To prevent these problems, make sure to water the plant only when the soil is dry and to remove any dead or dying leaves or stems from the plant.
Source:
Buddleja asiatica | Tropical Restoration Library
JC Raulston Arboretum - Photographs of Buddleja asiatica
All Asia - Buddleja asiatica - serv.biokic.asu.edu
