How to raise the latest goldfish grass?

Goldfish grass, also known as dragon head flower, lion flower, dragon mouth flower, ocean color finch, etc., is a perennial herb of Scrophulariaceae. It is often cultivated in 2012 and one year. Flowers blooming in summer and autumn are widely planted in Chinese gardens. They are suitable for planting in flower beds and flower borders, especially with hundred-day grass, petunia, marigold, string of red and so on. Let's take a look at how to raise goldfish grass.

Culture value of goldfish grass

1. Ornamental value: goldfish grass is a kind of flower. Like its name, each of its small petals is like a shining fish scale. Many brightly colored flowers form a large cluster of goldfish grass, which has high ornamental value. Flowers have many colors, such as white, pink, crimson, flesh color, orange and so on. The most amazing thing is that two different colors can bloom on one branch of goldfish grass. The bicolor flower is very amazing and is a kind of plant with high ornamental value.

2. Decorative function: the flowers of goldfish grass are large and beautiful, so many countries attach great importance to the use of goldfish grass to beautify the environment and decorate the courtyard lamp. Generally, goldfish grass is planted in flower beds, outside the window or indoors to make bonsai or take branches of goldfish grass to make flower arrangement and other techniques. In recent years, goldfish grass has become famous in cutting and arranging flowers, and has been loved by many flower lovers.

3. Edible value: goldfish grass plays an important role in oil crops, which can extract oil for human consumption and is very healthy and nutritious.

4. Medicinal efficacy: goldfish grass is a traditional Chinese medicine in China, with a slightly bitter taste, and the whole grass can be used as a cool traditional Chinese medicine. it has the functions of cool and empty heat, relieving toxins, activating the blood, and eliminating swelling and pain. it can treat hot colds and headaches in summer, as well as fractures, sprains and skin abscesses. It can be taken internally or externally, and the goldfish grass can be crushed and fried internally, but because the goldfish grass has a certain toxin, it should be taken in accordance with the doctor's orders and taken according to the dose and method. External application is to apply the crushed goldfish grass foam to the suppurative place.

Culture method of goldfish grass

1. Soil: goldfish grass does not have a high demand for soil, but it grows best in a slightly acidic sandy loam that is fertile, loose and well drained.

2. Watering: goldfish grass is very sensitive to water, and the potted soil must be kept moist, and it must be fully watered when potted seedlings are planted, but the drainage of potted soil must be good and cannot accumulate water. otherwise, it will easily cause root rot, stem and leaf withering and withering.

3. Sunshine: the light-loving herbs of goldfish grass need to survive under sufficient sunlight. The plants are short and cluster-shaped and compact, and they grow neatly and have been blooming neatly and have bright colors all the time. If they are in semi-overcast conditions, the growth of the plant will be on the high side and the inflorescence will be elongated and dim.

4. Temperature: goldfish grass is relatively cold-resistant but not heat-resistant, the most suitable temperature for growth is 7-10 degrees, high temperature will be disadvantageous to growth and development, and the most suitable temperature for flowering is about 15-16 degrees. Some varieties will not branch and affect the plant state if the temperature exceeds 15 degrees.

5. Fertilization: it is necessary to strengthen the management of fertilizer and water, and more attention should be paid to the cooperation of phosphorus and potassium, because it itself has rhizobium and has the role of nitrogen fixation, so it is not necessary to apply nitrogen fertilizer in general. In the growing period, it is necessary to apply fermented oil residue water every half a month, and loosen the soil and weed properly before fertilization.

6. Pruning: goldfish grass can only cut off its flowering branches after each flowering, so that it can better promote the germination of new branches and continue to bloom.

Disease control of Artemisia przewalskii

1. Grey mold

[hazard characteristics] Botrytis cinerea is an important disease of goldfish grass cultivated in greenhouse. The stems, leaves and flowers of the plant can all be damaged, mainly flowers.

[solution] at the initial stage of the disease, choose 1000 times solution of 70% methyl topiramate wettable powder or 50% carbendazim wettable powder spray for prevention and treatment. Spray once every 10 to 15 days, 2 times in a row.

2. Scorch blight

[hazard characteristics] High temperature, heavy rain and high humidity are beneficial to the occurrence of scorch blight of goldfish grass. The middle part of the disease spot on the leaf is gray-white, the edge of the disease spot is brown, the diameter of the disease spot can develop from about 1 mm to 15 mm, and the concentric ring longitude and latitude appear. The disease spot on the stem mainly occurs at the base, slightly sunken in the middle of the disease spot, and the others are similar to the disease spot on the leaf. When the disease is serious, the leaves fall early and the plants are short.

[solution] it is found that spraying 1000 times of methyl topiramate or 65% Dysen zinc wettable powder every 10 days can effectively control the disease.

3. Grass rust

[hazard characteristics] Grass rust mainly harms the leaves, tender stems and calyx of goldfish grass.

[solution] at the initial stage of the disease, 15% verapamil wettable powder 2000 times solution or 65% Dysen zinc wettable powder solution can be sprayed.

4. Leaf blight

[hazard characteristics] Leaf blight mainly occurs in the leaves and stems of Artemisia paniculata.

[solution] at the initial stage of the disease, the same amount of Bordeaux solution, or 65% zinc wettable powder 600 times, or 50% Lebente wettable powder 2000-2500 times, can be sprayed.

5. Stem rot

[hazard characteristics] Stem rot is mainly harmful to the stem and root of Artemisia paniculata. At the initial stage of the disease, light brown disease spots appeared on the rhizome, and when the plant was serious, the plant withered.

[solution] at the initial stage of the disease, 40% ethylphosphine aluminum wettable powder was sprayed 200 times 400 times, or 1000 times of 50% diendan wettable powder was used to irrigate the root and stem of the plant.

6. Seedling rot

[hazard characteristics] Seedling rot mainly harmed the seedlings of Snaphalotis. At the initial stage of the disease, the seedlings showed water stains near the base or root of the soil surface, and finally rotted, resulting in lodging or wilting and death of the whole plant.

[solution] at the initial stage of the disease, 50% carbendazim wettable powder 800 times or 75% chlorothalonil wettable powder 800 times can be sprayed.