The planting method of Rabdosia angustifolia

Rabdosia angustifolia, also known as cat's claw flower, is a perennial herb of Ranunculaceae, native to Europe and North America, with small and exquisite flowers, bright colors and strong adaptability, so it is suitable to be planted on lawns and under dense forests. it is also suitable for depressions, streams and other wet places to be covered, with high ornamental value, let's take a look at the planting method!

The growth habits of Rabdosia angustifolia

The roots of Rabdosia angustifolia are enlarged, cylindrical, up to 1.5 cm thick, simple or with a few branches, and the bark is dark brown. The root leaves, the leaf surface is glossy, the back is hairy, flowering in June or July, usually dark blue-purple or white, often born on mountain roadsides, rivers or wet grasslands at an altitude of 200,2300 meters above sea level. Like cool climate, avoid high temperature exposure in summer, strong and hardy, like sandy loam rich in humus, moist and well drained.

Propagation methods of Rabdosia angustifolia

1. Sowing: sowing is better than pot sowing immediately after the seeds are ripe. In order to adjust the dormancy period, the seeds are sown immediately after harvest. Apply sufficient base fertilizer, rake fine and flat, make the seedbed, pour enough bottom water, sow the seeds evenly on the seedbed, cover with concrete soil to see the seeds. Keep the border moist, excessive humidity will cause rotten seeds, and seedlings will emerge in 140 days.

2. Ramet: the ramet is carried out from August to September, first cut off the upper branches and leaves of the plant, retain the lower sprouts of the growing point, then dig up the plant, shake off the soil, and plant it separately according to the main root. If the main root is senescent, it should be removed to make sure that there is a part of the root neck at the base of the bud, then cut it on the sand bed and plant it separately after taking root, so that the cuttings can blossom in the second year.

The planting method of Rabdosia angustifolia

1. Potting: 5 to 6 weeks after sprouting, 3-4 cm diameter hole plates can be used for transplant, and 5 to 6 weeks later, blue flowers can be transplanted into pots with 10-15 cm flowerpots. Fan-shaped Douzi can be transplanted into pots with 7-11 cm flowerpots, and hybrid Douyang can be transplanted into pots with 11-16 cm flowerpots. Twice transplanting is beneficial to the quality of the plant.

2. Medium: the cultivation substrate of Euphorbia angustifolia needs to be well drained, and the soil content in the substrate is about 15%. About 15% organic matter (such as wood fiber and bark) can be added, and 1 to 1.5kg of fully balanced fertilizer and 1 to 2kg of slow-release fertilizer, iron chelate and micronutrient elements should be added to each cubic meter of substrate. The pH value should be 5.5 to 6.2.

3. Illumination: medium and long sunshine plants of the genus Euphorbia. Maintain the highlight level. Potted varieties need to replenish light in winter and spring, which is helpful to improve the quality of plants. In the middle of January, it needs to grow under long sunshine (16 hours) and continuous supplementary light (30000 to 40000 lux), and the temperature is kept at 12 ℃.

4. Temperature: the suitable temperature for growth and development of Rabdosia angustifolia is 14 ℃ to 16 ℃. After root formation, the temperature decreased to 8 ℃ to 10 ℃. The change of temperature can improve the quality of plants. In spring, seedlings begin to grow at a temperature of 15 ℃ to 18 ℃ for 6 to 7 weeks. The temperature of 10 ℃ to 12 ℃ will prolong the cultivation time. Avoid high temperature and weak light conditions.

5. Fertilization: the amount of fertilizer needed is moderate, and the balanced fertilizer of nitrogen and potassium with the concentration of 130ppm to 150ppm can be sprayed once a week. Avoid high ammonium and nitrogen levels. No fertilizer can be applied after mid-September. The completely balanced nitrogen fertilizer from 100ppm to 150ppm could be sprayed in spring, while the balanced nitrogen fertilizer from 100ppm to 150ppm could be sprayed in spring.

Disease and pest control of Rabdosia angustifolia

1. Mosaic disease

[symptoms] the disease occurred in the whole plant, with mosaic symptoms, foliar wrinkles and deformities.

[prevention and control] strengthen cultivation management, apply fertilizer scientifically, re-apply organic fertilizer, use more compound fertilizer, increase phosphorus and potassium fertilizer, and avoid partial application of nitrogen fertilizer, so as to improve plant nutritional conditions, improve virus resistance, and loose soil is beneficial to plant root development. timely eradication of field weeds, elimination of sources of infection, early control of aphids and elimination of virus transmission vectors.

2. Powdery mildew

[symptoms] the disease occurs on the leaves, and small spots of white powder are formed at the beginning, and then the spots are enlarged. in severe cases, the whole leaf surface is covered with powdery matter.

[prevention and treatment] at the beginning of the disease, you can choose 1500 times of 15% trimethoprim wettable agent, or 2000 times of 20% trimethoprim EC, or 50% polysulfide suspension, or 50% methyl thiophanate wettable powder and 75% chlorothalonil wettable powder. Spray once every 7 to 10 days, 2 times in a row. At the initial stage of the disease, 2% antimycin 120 water agent or BO-10 water agent can also be used, each time 500ml per mu of field, adding 100L water (effective concentration 100ppm) spray, once every 10 days, can be sprayed 3 times 4 times.