How to Plant Ranunculus Bulbs
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Ranunculus is native to southeastern Europe and was introduced to China in the 1990s. It is also called "celery flower" because its leaves resemble celery. The flowers of ranunculus resemble peonies, with vibrant and diverse colors, making them highly ornamental. Below is an introduction to the cultivation methods and precautions for ranunculus.
1. Light
Ranunculus prefers shade and does not tolerate strong light. It should be placed in a gentle, diffused light environment to grow, requiring at least four hours of sunlight daily. Insufficient light will affect its flowering. Providing ample light can advance its blooming period, promote the growth of lateral branches, and ensure the quality and quantity of flowers. In late spring and early summer, gradually shade ranunculus to avoid direct sunlight.
2. Water
Ranunculus enjoys growing in a humid environment. Excessive drought can lead to poor root quality, so it should not be kept in an extremely dry environment. Watering should be controlled during the seedling stage to prevent the stems from becoming leggy; after planting, make sure the first watering is thorough, and continue timely watering during the growth process, especially before flowering, to prevent affecting the blooming period.
3. Temperature
Ranunculus prefers a cool environment, with a suitable growth temperature of 15-20 degrees Celsius. It should be moved to an environment with appropriate temperature and little day-night temperature difference, to prevent excessive nutrient consumption, which affects the quantity and quality of flowers. If grown in a greenhouse, keep the temperature inside the greenhouse between 0-22 degrees Celsius.
4. Fertilizer
Use decomposed organic fertilizer before planting. When the plant starts growing, use compound fertilizer for top dressing, with a frequency of once a week. In winter, use nitrogen-containing compound fertilizers and avoid using chlorine-containing fertilizers.
5. Soil
Ranunculus grows well in acidic soil. For potting, prepare soil rich in humus, fertile and loose, with good aeration and drainage. Mix different substrates like peat, perlite, and garden soil in appropriate proportions.
6. Propagation Methods
The main propagation methods of ranunculus include bulb division, seed propagation, and tissue culture. Division propagation is usually done in early autumn by digging up the dormant roots and splitting the rhizomes. After separation,消毒 them in a potassium permanganate solution, then dry before planting. For seed propagation, soak the seeds in water for seven hours first, then消毒 them with a diluted carbendazim solution before germination, and then sow the seeds in suitable soil.
7. Precautions
Ranunculus is commonly affected by diseases such as white rot, blue mold, and root rot. White rot, caused by fungal infection, leads to stem necrosis, preventing the plant from absorbing water, causing leaves to wither. Infected branches should be removed promptly to prevent the spread to healthy ones and spray fungicides like carbendazim for treatment. Blue mold mainly occurs during the storage of tubers, sometimes during the growing period, with the fungus covering the stored tubers. This is often due to the tubers being placed in a humid and poorly ventilated environment. When harvesting and storing tubers, minimize root damage and keep them in a low-humidity, well-ventilated place, promptly removing and cutting off infected tubers. Root rot is caused by alkaline soil and excessive moisture, leading to bacterial growth and root decay. Tubers should be soaked in a potassium permanganate solution for disinfection before drying, and during the disease, diluted methylthiophanate solutions can be used for treatment, or the potting soil can be changed immediately.
The above content covers all about how to plant ranunculus bulbs and the planting methods for the bulbs. Green plant enthusiasts can refer to this for reference.