A. Magnolia belongs to the Magnoliaceae family
Magnolia is a deciduous tree, reaching up to 25 meters tall and 200 cm thick in diameter. The crown becomes narrowly ovate when young, while the mature tree takes on a broad-oval or loosely wide-oval shape. The main trunk of the tree is obvious and the tree is majestic and strong. The tree has a strong growth potential, long nodes and sparse branches, and is relatively small. However, the flowers are so large that they look white and flawless from a distance.
B. Magnolia is a landscape plant
Magnolia grows slowly, if planted in the garden, it takes a long time to achieve the expected landscape effect of the landscape. So sometimes in a certain period of time to achieve a more satisfactory landscape, you have to transplant Magnolia big trees. And there is an indisputable fact that the survival rate of the transplanted trees is too low.
C. Transplanting of Magnolia
The first thing that should be noted is the selection of large trees and the time of transplanting season.
1. The selection of Magnolia
It is to be in the miscellaneous woodland or plantation where the terrain is flat and the surrounding area is properly open. Select trees with straight trunks, strong growth, free from diseases and insects, with a full crown and new buds and tips on the trunk. Magnolia species with new branches and relatively strong regeneration ability should transplanted.
2. Season of Magnolia transplanting
In Guangzhou, the best time to transplant Magnolia is in November this year and January next year. In Guangzhou, the best time to transplant Magnolia is from November to January. During this time, Magnolia is divided into three stages for packing the soil ball and pruning the roots.
3. First stage
After the Magnolia trees are selected in their origin, the size and height of the soil ball are determined according to the diameter at breast height and the local soil conditions.
4. Generally speaking
20cm tree diameter at breast height can matched with 1.2m diameter soil ball size, or make corresponding increase or decrease to soil ball size according to this ratio. At this time, the roots of Magnolia are pruned from left to right direction (or front to back direction).
Use breathable fiber mesh to wrap the ball and the roots in the front and back direction (left and right direction), put them into the dug pit and bury them in a thin layer of soil, then water and cultivate them.
6. Second stage
A month later the first pruning of the door magnolia, open the breathable fiber screen. Prune the Magnolia roots in the direction of front and back for miscellaneous roots.
7. After the pruning of Magnolia
After pruning, Magnolia continues to wrapped up with fiber mesh and continues to cultivated for one month. The purpose of this is to prevent Magnolia from dying due to water loss and dryness caused by pruning too many roots at once, and also to test the regeneration ability of the selected tree.
8. Third stage
After the two previous stages of careful care, wait for the Magnolia new shoots and new tips to grow more luxuriantly. It will prove that Magnolia has taken on a new life, so that the strictly selected Magnolia can loaded and transported.
D. Precautions for Magnolia
The second thing to pay attention to when transplanting is loading, transporting and planting.
(1) Before loading Magnolia
If Magnolia is very leafy, the leaves should be trimmed properly. This is to reduce the amount of water evaporated by transpiration so that the does not die due to lack of water.
(2) Packing of the soil ball
Immediately after the ball is rounded, it should wrapped with a pre-prepared moist straw bale. And wrap it with moist straw rope across the waist, 7-10 times, and tie it tightly.
(3) Loading of Magnolia
Before transporting the big tree, calculate the weight of the soil ball and the big tree in order to arrange the corresponding lifting tools and transport vehicles. When lifting the seedlings by crane, put a l-inch thick wood block on the contact surface of the wire rope and the soil ball to prevent the soil ball from being loosened due to excessive local force.
(4) Planting of Magnolia
Using the soil mound planting method, cultivate the transplanted trees at the pre-designated location. The bottom of the dug pit should filled with fertilizer, the diameter of the pit should 30-40cm larger than the diameter of the ball, and the depth should 30-40cm deeper than the height of the ball, then the ball should buried slowly.
(5) After positioning the tree
Remove the straw rope and other packing materials, then evenly fill in the pre-prepared soil suitable for the growth of Magnolia trees. Fill in layers and water when the soil is filled to 2/3. If a hole is found, it should filled and pounded in time. Add soil after the water seeps down, and then pile the soil into a hill.
E. Maintenance and management of Magnolia trees after transplanting
The maintenance management after transplanting large trees can said to more important than the work of transplanting large trees. The main tasks are watering, fertilizing, trunk wrapping, drainage, trellis shading, bud stripping, summer sunburn prevention and winter cold prevention, disease and pest control, etc.
①Watering of Magnolia
As Magnolia trees are transplanted, the root system will greatly damaged and the ability to absorb water is greatly reduced. The tree often withers due to insufficient water supply and loss of water metabolism balance. Therefore, watering is a very important management measure after transplanting. Watering should done at the right time, and also according to the tree species and weather conditions to spray water mist moisture or trunk package.
In the process of transplanting Magnolia, due to the loss of water, many nutrients of are also lost. Therefore, in the maintenance and management, timely and appropriate application of some organic fertilizer nutrients conducive to the growth of is essential for the survival of Magnolia (if you have automated irrigation equipment, you can use more efficient and fast water soluble fertilizer).
③Wrapping the trunk of Magnolia
The purpose is to prevent excessive water transpiration by wrapping the trunk completely with straw rope. Spray water once a day in the morning and once in the evening, as long as the leaves on the canopy and the grass rope wet can sprayed. Water spraying time should not too long, so as not to flow too much water into the soil, causing the soil too wet and affect the root respiration.
④Drainage of Magnolia
Too much water can affect root respiration and cause root rot. Especially after heavy rains, or excessive water application caused by human carelessness resulting in water accumulation, it is necessary to increase the drainage system to improve.
⑤ Shade by trellis
The average temperature in Guangdong is relatively high in summer, especially in summer, and water evaporation is high. In order to reduce the evaporation of Magnolia, shade shelters should built above or around the canopy, which can also prevent the strong sunlight from burning the leaves.
⑥ Magnolia peeling buds
After transplanting, should stripped of buds and de-budded regularly and in stages. It is used to reduce the nutrient consumption and ensure the rapid formation of the tree crown in a relatively short period of time.
⑦ Prevent sunburn in summer and cold in winter
The newly transplanted is fragile and cannot withstand wind and rain. Therefore, in the summer should prevent the leaves from being burned by strong sunlight, and in winter, the temperature in Guangzhou is not too cold, so the measures to prevent cold can be paid attention to a little.
⑧ Disease and pest control
Diseases refer to some illnesses caused by the wretched function of the Magnolia tree itself, and pests and diseases refer to various symptoms caused by the natural enemies of the tree parasitizing on the tree. Disease and pest control require careful care, fertilizer and a certain amount of pesticide spraying at the right time.