How to plant seeds of Rosa przewalskii and its planting methods and matters needing attention

As each kind of plant has different growth habits and ways, we need to start from their habits and then find a suitable environment for their growth, so that we can achieve the final results we want. Planting yellow thorn rose is mainly used for ornamental, so flowering is the ultimate goal.

How to plant seeds of Rosa przewalskii

I. seed treatment

1. Not all seeds can germinate, only a single one can achieve seed sowing. Because the seed coat of this plant is very thick, it is not easy to germinate, and the thick seed coat blocks the entry of water. Dispose of the seeds before planting.

2. The time to deal with the seeds is about May and June, so that they will be planted in the coming year.

3. Choose a piece of highland with unobstructed drainage and dig a pit with a depth of 1.2 to 1.5 meters with a diameter of one meter. 4. Prepare a basin of warm water with a temperature of about 65 degrees, soak the seeds for an hour, remove them and sterilize them with potassium permanganate for two hours. Rinse with clean water after being fished out.

5. Wet the sand and fill in 20 centimeters at the bottom of the pit. Sterilize the river sand, mix it with the species, mix one seed with three parts of sand, and do not produce water.

6. find an early morning (relatively low temperature) to pour the mixture of seeds and sand into the pit, about 25 centimeters from the mouth of the big pit, covered with sand, the top layer of sand is almost flush with the big pit, and several ventilators should be inserted into the pit and covered with straw mats.

7. Add 20 centimeters of chopped weeds to the table. Dig drainage ditches around the pit to prevent stagnant water caused by rain, watering, etc.

8. after the stored bunker is done, you can wait for the seeds to sprout in spring. During this period, we should not be idle. We should often measure the temperature and humidity. If the temperature rises too fast, it depends on whether the seeds are moldy or not. If there are no special circumstances, 30% of the seeds will crack in the coming year. Take out the seeds before sowing and sow them.

2. Sowing method

1. Choose a piece of fertile sandy soil that is evenly spread and drained to the sun, turn over the soil to make the soil loose, trim the garden and sterilize it after fertilization.

2. Spring sowing usually takes place in April, and the temperature rises. A few days ago, the land was irrigated and watered. When the water is semi-dry and soft, put seeds and cover the soil one centimeter. You can press the soil surface slightly, control the water, fertilizer and temperature, and wait for the seedlings to emerge.

Planting methods and points for attention of Rosa przewalskii

First, the culture method of Rosa davidii

1. Soil requirements

Yellow thorn rose in the growth of soil requirements are not strict, more tolerant of drought and barren, but also can grow in alkaline soil. But because yellow thorn rose is not resistant to waterlogging, so the soil requires good drainage, as far as possible loose and breathable.

2. Water and fertilizer management

When planting Rosa przewalskii, it is necessary to apply some rotten compost as base fertilizer, and no more fertilizer is needed after survival, but in order to make it flourish, topdressing can be applied every other year after flowering.

Yellow thorn rose should be watered once after planting, and then watered once every 3 days or so, and then it can survive. In daily management, water should be watered in time according to drought, so as to avoid wilting or even death caused by excessive drought and lack of water. Pay attention to drainage and waterlogging prevention in the rainy season, and irrigate once anti-freezing water before frost.

3. Pruning

Yellow thorn roses should be pruned frequently.

Pruning should be carried out after flowering, and the residual flowers and dead branches should be removed to reduce nutrient consumption.

Pruning after falling leaves or before sprouting, cut off old branches, withered branches and overdense thin and weak branches to make them grow vigorously. The 1-year-old and 2-year-old branches should be cut as little as possible so as not to reduce the number of flowers.

II. Matters needing attention in the culture of Rosa davidiana

1. Methods of reproduction

Rosa przewalskii is propagated by means of ramet propagation, striping propagation and cuttage propagation.

Rosa przewalskii has strong tillering ability, so it is suitable to propagate by the method of plant division, because the method of plant division has the advantages of fast seedling formation, high survival rate and the same double petal character of the plant.

2. Disease

Yellow thorn rose has the advantages of easy cultivation, extensive management and less diseases and insect pests. Generally speaking, the harm of powdery mildew will appear in the growth process of Rosa przewalskii, which is mainly characterized by pathological changes on both sides of the leaves and sparse powdery mildew layer, which distorts the leaves and turns the young leaves purple-brown and withered.

Growth habits of Rosa przewalskii

Yellow thorn rose is a kind of light-loving plant, slightly shade-tolerant and cold-tolerant. It is lax in soil, resistant to drought and barren, and can grow in saline-alkali soil. I can't stand waterlogging. Huangximei is mainly distributed in Jilin, Liaoning, Inner Mongolia, Hebei, Shanxi, Shaanxi, Gansu, Qinghai and other provinces and regions. It is a beautiful ornamental plant often used in the north.

Florescence of Rosa davidiana

Yellow thorn rose is an important ornamental flower in late spring and early summer in northern China. Its flowering period is mainly from April to June every year, and the flowering period is longer. Sometimes, Huang Cimei will open early.

Generally speaking, planting a plant can achieve results as long as it is clear about its growth habits and then planted in a specific way, but in fact, planting a plant requires not only paper knowledge, but also practical experience. and the most intuitive perception of the state of plant growth.