Culture methods of paulownia

1. Light and temperature

As paulownia is a better variety to grow, it can be planted in sunny places. Like places with plenty of sun, have a strong ability to withstand drought, so you don't have to worry about not being watered for a long time. For temperature, paulownia likes to be in a warm place, so the temperature can be as low as minus 25 degrees Celsius and as high as 38 degrees Celsius. If it is too low, it is not conducive to the growth of paulownia.

2. Soil

For soil, paulownia will be relatively demanding. Like to grow in loose and fertile soil. The soil should not be too sticky or too hydrated, which will cause the roots of paulownia to rot, which is not conducive to growth. in addition, the soil is too dry, which will prevent paulownia from growing up.

The above is the difference between paulownia and sycamore, in fact, these two varieties are very easy to distinguish, more careful observation can be distinguished!

Culture methods and matters needing attention of paulownia

Culture methods of paulownia light and temperature

Paulownia likes sunny environment and is more resistant to shade. Paulownia has strong drought resistance, so keep the temperature at-25 degrees Celsius-38 degrees Celsius when breeding paulownia. If the temperature is below minus 25 degrees Celsius, you will suffer frost damage.

Soil

Paulownia has higher requirements for soil. It is mainly manifested in soil fertility, soil layer thickness and loose degree. If the soil is more sticky or too waterlogged, it will make paulownia grow poorly. Too dry soil will also make the growth momentum of paulownia poor.

Matters needing attention in paulownia culture diseases and insect pests

Paulownia pests are mainly big bag E, beetles, diseases are anthrax, black bean disease and so on. The main harm of beetles to paulownia is that larvae bite and eat seedlings in early spring. The main method of prevention and control is to manually kill or release poultry to eat them. Paulownia is the most suitable to be harmed by Plutella xylostella, which can be controlled by 3000mm 3200 times of enemy killing liquid. To control anthracnose and black bean disease, copper sulfate and ammonium bicarbonate can be mixed according to the ratio of 1:10, sealed for 24 hours, and the seedlings can be sprayed with 200x liquid.

Reproduction method

The main propagation methods of paulownia are root insertion, sowing, leaving roots and so on.

Flowering and fruiting stage

The flowering period of paulownia is from March to April and the fruit period is from September to October.

Culture methods and matters needing attention of paulownia tomentosa

Latin name Paulownia tomentosa

Also known as purple paulownia, Gangtong, Japanese paulownia

Binomial method Paulownia tomentosa (Thunb.) Steud.

The plant kingdom.

Phylum angiosperm

Dicotyledonous class

Subclass synpetalous flower

Eye-labial order

Department of Science and Metaphysics

Belong to paulownia

Paulownia Paulownia tomentosavar.tsinlingensis

The distribution area grows from 500m to 1800 m above sea level.

Variety of paulownia

Paulownia (scientific name: Paulownia tomentosa) belongs to the genus Paulownia of Scrophulariaceae. With its purple flowers, also known as purple paulownia. Deciduous trees, up to 20m high, with brownish-gray bark and white spots. Petiole often with sticky glandular hairs, leaves entire; lateral branches of Cymes underdeveloped, small Cymes with 3-5 flowers, calyx shallowly campanulate, densely stellate tomentose, 5-lobed to middle, Corolla funnelform-campanulate, outside lilac, hairy, inner surface white, with purple stripes; capsule ovoid, apex acute, exocarp leathery; florescence April-May; fruit August-September. Distributed in North America, Japan, Korea, Europe and Chinese mainland in Hebei, Shandong, Hubei, Jiangxi, Liaoning, Henan, Jiangsu, Anhui and other places, growing in areas ranging from 500 m to 1800 m above sea level.

1. Morphological characteristics.

Trees up to 20 meters tall, broad umbrella-shaped crown, brownish gray bark; branchlets with obvious lenticels, often with sticky short glandular hairs when young. Leaf blade heart-shaped, up to 40 cm long, apical acute, entire or undulate-lobed, upper hairs sparse, lower hairs dense or sparse, gray-brown dendritic hairs under old leaves often stipitate and 3-12 slender filiform branches, leaves on new branches larger, hairs often unbranched, sometimes with sticky glandular hairs; petiole often with sticky short glandular hairs. The lateral branches of inflorescence branches are underdeveloped, about half of the central main branch or slightly shorter, so the inflorescence is pyramidal or narrowly conical, generally less than 50 cm long, rarely longer, the total pedicel of Cymes is 1-2 cm long, almost as long as pedicels, with 3-5 flowers. Calyx shallowly campanulate, ca. 1.5 cm, villi not shed outside, divided to or split through middle, calyx teeth ovate-oblong, acute or slightly obtuse in flower to obtuse in fruit; Corolla purple, funnelform-campanulate, 5-7.5 cm long, arched about 5 mm from tube base, suddenly inflated upward, glandular hairy outside, inner surface glabrous, eaves 2 lips, ca. 5 cm in diameter; stamens up to 2.5 cm long. Ovary ovoid, with glandular hairs, style shorter than stamens. Capsule ovoid, densely mucilaginous glandular hairy when young, 3-4.5 cm long, persistent calyx not revolute, pericarp ca. 1 mm thick; seeds winged ca. 2.5-4 mm. The florescence is from April to May and the fruiting period is from August to September.

The species often varies in terms of dense coat, the size of flower branches and Corolla, and the obtuse tip of calyx teeth due to habitat and altitude. It grows at a higher altitude, and has the trend of smaller flower branches, blunt calyx teeth at flowering stage and slightly shorter Corolla.

2. Growth environment

It is resistant to cold and drought, salt and alkali, wind and sand, strong resistance, and has a wide range of adaptation to climate. The growth is affected when the high temperature is above 38 ℃, and the absolute lowest temperature is frozen when the temperature is-25 ℃. This species is more resistant to drought and barren, and is especially suitable in cold and arid areas in the north, but the trunk is low and the growth rate is slow.

3. Geographical distribution

Distributed in southern Liaoning, Hebei, Henan, Shandong, Jiangsu, Anhui, Hubei, Jiangxi and other places, usually cultivated, wild in the western region. It can reach 1800 meters above sea level. Japan, Korea, Europe and North America are also introduced and cultivated.