Culture methods of sorrel

Sorrel, also known as sour grass, patchoulic acid, trefolic acid, etc., is a perennial herb of the Oxalis family, which blossoms continuously in spring, summer and autumn, and blooms most in the cool time of spring and autumn. Because of its low plant, fast growth and long flowering time, the flowering season is very spectacular and is widely used in landscaping. Let's take a look at the cultivation methods of sorrel grass.

The growth habit of Oxalis

Oxalis grows in grass ponds on hillsides, along river valleys, along roadsides, by the side of fields, on wasteland or in shady and humid places under forests, and prefers sunny, warm and humid environments. hot areas in summer should be shaded, drought-resistant and cold-resistant. North China needs to be cultivated in a greenhouse in winter. To the south of the Yangtze River, it can stand in the open field, like a shady and humid environment, has strong adaptability to soil, and can grow in general garden soil, but it can grow vigorously in sandy loam rich in humus. There are short periods of dormancy in summer. Open when the sun is extremely bright.

Propagation methods of Oxalis

1. Ramet: first of all, select the plant that grows well, that is, the rhizome has many small branches, take it out of the basin, do not remove the soil from the root. Break the plant into several clumps by hand, and determine the size of the clump according to the bud eyes on the rhizome, usually retaining more than 3 bud eyes in each clump. If there are more leaves, they can be removed directly. After drying the wound in a cool place, put the divided plants into the sandy soil and keep the temperature at 13-18 ℃, which will soon take root and grow leaves.

2. Sowing: the seeds of sorrel are small, so they should be sown indoors. First of all, prepare a larger diameter flowerpot (or replace it with a foam box), sprinkle the seeds evenly on the soil surface, and cover with 1cm of soil. Cover with a plastic film after sowing to ensure the humidity in the basin. It can sprout 10-12 days after sowing, and can be transplanted into flowerpots after growing seedlings. 3-5 plants can be planted in one flowerpot.

Culture methods of sorrel

1. Soil: Oxalis has strong adaptability to soil, which can grow in general garden soil, but it grows vigorously in sandy loam rich in humus. As the growth rate of sorrel is very fast, the pot should be turned once a year in spring. When turning the basin, it is best to change the soil, the first choice is loose, fertile, well-drained medium-acid soil.

2. Temperature: Oxalis prefers warm environment, and the most suitable growth temperature is 16-22 ℃. The plants below 10 ℃ stopped growing and the leaves of 0 ℃ withered. However, as long as the underground roots are not frozen, new leaves can still germinate and grow normally in April next year. In winter, the leaves should be kept in normal state and the temperature should be kept above 5 ℃. Not resistant to high temperature, when the temperature is more than 35 ℃, the leaves curl, grow slowly, and enter the dormancy period.

3. Light: sorrel needs sufficient light to grow in full-day or half-day environment. Spring and autumn season to receive sufficient sunlight, overcast will cause the leaves dull, at the same time petiole thin, plant type scattered. But also to avoid direct strong light, May to September to properly shade, so as to avoid sunburn. Phototaxis is stronger, when maintenance on the balcony, windowsill, to often change the position of the plant, so that its surrounding light evenly.

4. Watering: Oxalis is resistant to drought, but likes a humid environment, keeps the basin soil moist during its growth, and adheres to the principle of "no dry, no watering". In the summer high temperature season, the plant enters the dormant period, at this time should spray water, keep the basin soil slightly wet. When the winter temperature drops below 10 ℃, watering should pay attention to dry rather than wet to prevent corm from rotting.

5. Fertilization: when the sorrel grass is put on the pot, it is necessary to apply sufficient base fertilizer. In the growing season, nitrogen, phosphorus and potassium compound fertilizer was applied once a month in order to make the plant grow healthily and ensure that the leaves were thick and shiny. Pay attention to the concentration when fertilizing, too much concentration will burn the corm and affect the growth, and stop fertilizing from July to August. Be careful not to apply a single fertilizer, especially nitrogen fertilizer, which will change the leaves from purple to green and affect the ornamental. Do not splash liquid fertilizer on the leaf surface when fertilizing, it is easy to cause leaf disease.

6. Pruning: when the sorrel plant is too prosperous, the denser leaves should be removed in time to improve the ventilation and light transmission conditions and promote the growth. In daily maintenance, the withered and yellow leaves should be removed in time to reduce the occurrence of diseases and insect pests. When the petiole is too long or the plant type is not beautiful, you can re-cut the leaves to let them grow new leaves.

7. Diseases and insect pests: Oxalis has dense growth, poor ventilation and light transmission in the lower part, powdery mildew is easy to occur in high temperature and humidity, yellow mildew and rot in leaves, and fungicides such as triadimefon and topiramate can be sprayed. In addition, red spiders began to do harm in early May. As the leaves of sorrel are dense and it is difficult to control, it is necessary to give priority to control. When the temperature rises in April, acaricides are sprayed, which can not be controlled only when red spiders occur.