A. Characteristics of sakura
Sakura bark is purple-brown, smooth and shiny, with horizontal lines. Flowers are alternate with leaves, elliptic or obovate-elliptic, with awn teeth at the edge. Propodeum pointed and glandular, surface dark green, shiny, abaxially slightly light.
B. Appearance of sakura blossoms
Stipules lanceolate-linear, with finely divided serrate margins and glandular at the split ends. The flowers are three or five per branch, in umbels, spreading horizontally, with notched petal apex, white and red. Flowers are released in March with the leaves or after the flowers. The nucleus is spherical, red at first, then becomes purple-brown, and matures in July.
C. Planting sakura soil
Generally can use the homemade rotten leaf soil to improve the cultivation soil. The sakura blossoms planted in Wuhan mill mountain sakura blossom garden used to have poor growth due to solid soil quality, poor drainage and aeration. After improving the soil, the effect is very obvious that the root system is developed, the branches and leaves are lush, the flowers are colorful, and there are less pests and diseases.
D. Sakura blossom propagation
The main propagation is sowing, cutting and grafting.
①Breeding sakura by sowing
Pay attention not to make the seed embryo dry, should sown after picking or wet sand lamination in the following spring.
②Breeding sakura by grafting
We can use the live seedlings of sakura and mountain sakura. Cut in late March or budded in late August, after 3 to 4 years of cultivation, can be planted out of the nursery.
③When planting sakura
Apply 15kg-25kg of well-rotted compost per pitcher and 1kg-2kg of ammonium sulfate per plant in July.
④After flowering and before germination in early spring
Need to cut off the dead branches, sick and weak branches and long branches. Try to avoid the pruning of thick branches to keep the crown complete.
E. Soil of sakura blossom
Sakura blossoms can grow well in sandy loam and clay loam soil (pH 5.5 to 6.5) with more humus.
1. Soil in the south
In the south where the soil is clayey and heavy, usually mix homemade humus soil.
Before mixing, all the original clay pieces must broken up, otherwise it will not work to change the soil.
3. Groundwater level
In places where the water table is less than 1 meter, the high planting method is used, i.e., the entire planting hole is padded and then the seedlings are planted on top of the soil.
4. Northern alkaline soil
Sulfur powder or ferrous sulfate should applied to adjust the pH to about 6. Apply 2 grams of sulfur powder per square meter, valid for 1 to 2 years. At the same time, measure it every year so that the pH value does not exceed 7.
5. Large sakura tree
Likes sunlight, afraid of wind. Sakura blossoms are planted in the early spring period, usually in February-March.
6. Sakura blossom is shallow rooted
When planting sakura trees, it is not advisable to pile up the soil too high. It should be parallel to the ground to facilitate the growth of sakura roots. If the pile of soil is too high, it is easy to make the root system grow poorly or grow slowly.
F. Fertilization method of sakura tree
It can take “cave application” which is to control a single cave about 10cm deep at the edge of the tree crown projection line. Apply the fertilizer mixed with charcoal powder, bone powder, apple pomace, phosphate fertilizer, microorganism, etc., and then mulch the soil on top and tread it flush with the ground.
(1) This method of operation
This method is simple and labor-saving, and is conducive to the absorption of the root system, and the fertilizer application time is chosen after the flowering, and the effect is better.
(2) Pruning of sakura blossom
It is often decided according to observation and judgment, mainly pruning withered branches, long branches, overlapping branches, disease and insect branches.
(3) Big sakura tree trunk
When many branches grow out, should keep the strong branches. The rest are all cut off from the stem, which is conducive to the sakura blossom ventilation and light penetration, constant renewal and vigorous growth.
(4) Sakura blossom after pruning
To disinfect the wound with medicine in time to prevent the germs to infiltrate into the wound and rot after rain.
(5) Sakura blossoms after long period of sun exposure
The skin is prone to aging and damage, causing rotting phenomenon. Also cause the root aging, the ability to absorb water is weakened.
(6) This situation occurs
The aging bark should removed in time, disinfection treatment and soil improvement work. Take to wrap the rotten part with decaying soil and charcoal powder to promote it to restore the normal physiological function.
G. Sakura blossom’s growth period management
Sakura blossom is fertilized twice a year, acidic fertilizer is good(If you have automated irrigation equipment, you can use the more efficient and faster water soluble fertilizer).
Organic fertilizer such as soybean cake, chicken manure and well-rotted manure is applied in winter or early spring.
2. After the flowers fall
Apply ammonium sulfate, ferrous sulfate, calcium superphosphate and other fast-acting fertilizers. General large sakura tree fertilization, can take the hole application method.
At the edge of the positive projection line, dig a circular trench about 10cm deep and apply the fertilizer into it.
This method is easy and conducive to root absorption, later on, as the tree grows, the diameter and depth of the ring-shaped trench of fertilizer application increases.
5. Sakura root system distribution shallow
Require good drainage and air permeability, so around the tree, especially within the root distribution. Never trample the soil by human, animal or vehicle.
6. Pedestrian trampling
It will make the tree weaken, shorten the life span, and even cause rotten root death.
H. Pruning maintenance
Pruning is mainly to cut off withered branches, long branches, overlapping branches and disease and insect branches. In addition, when many branches grow on the trunk of big sakura tree, a number of strong branches should be kept. The rest all cut off from the base, in order to facilitate the ventilation and light.
1. Sakura blossom pruning after the branch
The wound should disinfected with medicine in time to prevent the disease from invading after rain, which leads to rot. After that, wrap the rotten part with rotten leaf soil and charcoal powder to promote its recovery of normal physiological function.
2. Pests and diseases and their control
Sakura blossoms should mainly prevented from runner’s disease and rhizoctonia, as well as aphids, red spiders, moths and other insect pests.
3. Gum disease
It is caused by moths bore into the trunk to lay eggs, you can dig out the eggs with a sharp knife. Also improve the soil and strengthen water and fertilizer management.
It causes the roots of the diseased tree to fail to grow normally, and the tree is still not strong no matter how much fertilizer is applied. To remove the tumor in time, soil disinfection treatment, using rotten soil, charcoal powder and microbial improvement of soil.
5. Sakura blossom prevention pest
Spray 3 to 4 times a year, the first time before flowering, the second time after flowering and the third time in July to August.
I. Sakura blossom flower language
Symbolic representation: warm, pure, noble. Flower language: life, happiness never give up in a lifetime, love only you in a lifetime. The law of fate is the cycle, waiting for you to return.