Paulownia is a deciduous tree that is native to china. it is also commonly known as the princess tree, empress tree, or foxglove tree. the paulownia tree has large, heart-shaped leaves and showy, purple flowers. the paulownia tree is fast-growing and can reach a height of 30-60 feet.
Related plant:
Paulownia Tomentosa
About soil condition, Paulownia does not have high demand and is adaptable to a wide range of soil conditions from sandy loam to heavy clays. However, it grows best on deep, well-drained soils with a neutral to slightly alkaline pH. It is not tolerant of wet, poorly drained soils.
Like the other trees, the Paulownia needs sun to grow. It prefers full sun, but can also tolerate partial shade. The amount of sun your tree gets will affect its growth rate and how big it gets. If you live in an area with long, hot summers, your tree will need some relief from the afternoon sun to prevent leaf scorch.
The temperature condition is the most important factor for the growth of paulownia. If the temperature is too high, the leaves will be withered; if the temperature is too low, the branches will be frozen. In general, paulownia can tolerate a wide range of temperatures, from -30 to 35 degrees Celsius.
Ideal humidity condition for this plant is between 40-60%. If the environment is too dry, the leaves will turn brown and drop off. If the environment is too wet, the leaves will turn yellow and drop off.
About fertilizer, this kind of plant prefers light fertilizer, and you can apply it once a month. Its recommended that you use organic fertilizer, such as compost. As for the roots, they are very sensitive to waterlogging, so make sure the soil is well-drained.
Pruning is an important aspect of paulownia care. The tree can be pruned to encourage new growth, to improve the shape of the tree, or to remove damaged or diseased branches. When pruning, be sure to use sharp, clean pruning shears.
Propagation is typically by seed, as the wood is too soft to take cuttings. The large, fragile seeds must be sown immediately after collection as they lose viability quickly. Sow the seeds in moist sand and keep at a temperature of 21-24°C. Seedlings emerge in 4-8 weeks. When large enough to handle, transplant into individual pots and grow on in a well-lit position in moist but well-drained, lime-free potting compost. Scale back hard in late summer or autumn to encourage bushy growth.
Usually, the plant growth rate is the result of planting aggressive species that are adapted to certain areas. Some of the more popular paulownia species include the fast-growing white paulownia (P. tomentosa), golden paulownia (P. fortunei), and silver paulownia (P. Tomentosa f. albescens). All of these species have different planting requirements, so it is important to consult with a local nursery or extension service before planting. Paulownia is a popular tree for growth rate due to its tolerance of a variety of soils and climates. It is considered an aggressive species, however, and should be planted with caution. Some of the more popular paulownia species include the fast-growing white paulownia (P. tomentosa), golden paulownia (P. fortunei), and silver paulownia (P. Tomentosa f. albescens). All of these species have different planting requirements, so it is important to consult with a local nursery or extension service before planting.
Common problems for this kind of plant are pests and diseases. Some of the pests that can attack this tree are aphids, scale, and whiteflies. As for diseases, paulownia is susceptible to root rot and wilt.
Source:
Royal Paulownia - bellarmine.edu
Paulownia is becoming a royal pain! | seohiowoods
Paulownia: A Guide to Establishment and Cultivation
