How to Cultivate Potted海棠
Potted海棠, with its brilliant flowers and elegant form, is deeply loved by gardening enthusiasts. However, to grow healthy and flourishing海棠 plants, it is necessary to master scientific maintenance methods. This article will systematically analyze the key points of the full cycle maintenance of potted海棠, from substrate selection to pest and disease control.
I. Substrate Configuration and Potting Management
1.1 Ideal Substrate Formula
Use a mixture of river sand and decomposed leaf soil in a ratio of 1:3, ensuring good drainage and rich in organic matter. Adding 5% perlite can enhance breathability, and adding bone meal as a base fertilizer during soil mixing is more effective.
1.2 Potting Cycle Operations
Change pots every spring before sprouting, with the new pot diameter 5-8cm larger than the old one. Keep 1/3 of the protective soil when repotting, cut off the decayed roots, and the new soil needs to be treated with high-temperature disinfection.
II. Temperature Control Strategies
2.1 Growth Temperature Management
Maintain the best temperature of 18-22°C during the day and 15-18°C at night. When the temperature exceeds 28°C in summer, cooling can be achieved by spraying water (avoiding noon) combined with the use of sunshade nets. In winter heating environments, keep the potting soil moist.
2.2 Seasonal Protection
Wrap the pot wall with straw rope before the winter cold wave and cover with a plastic bag at night for insulation. Move the plant to the north-facing balcony during the high summer temperatures to maintain good ventilation.
III. Precise Water and Fertilizer Management
3.1 Intelligent Watering Plan
Adopt the principle of "watering when dry and moist": water thoroughly every 3-5 days in spring and autumn, check the soil moisture in the morning and evening in summer, and extend to every 15-20 days in winter. Use the bamboo stake insertion method to test, and water immediately if the soil sticks to the bamboo stake.
3.2 Nutrient Supplement Plan
Apply diluted cake fertilizer water (1:50) every 10 days during the growing season, and add more phosphorus and potassium fertilizers during the budding period. It is recommended to alternate the use of seaweed fertilizer and EM bacteria solution, stop fertilizing and reduce watering frequency in winter.
IV. Comprehensive Pest and Disease Control
4.1 Preventive Measures
Apply garlic extract (100g per liter of water) monthly to prevent diseases and keep the leaf surface dry. Regularly wipe the back of the leaves with alcohol-soaked cotton to prevent the growth of scale insects.
4.2 Targeted Control
Remove diseased leaves at the early stage of leaf spot disease and then spray with mancozeb 800 times solution; when aphids break out, wash with dishwashing water (1:200), and alternate the use of imidacloprid and matrine in severe cases.
By scientific substrate management, precise environmental control, reasonable water and fertilizer supply, and systematic pest and disease control, potted海棠 can remain vigorous throughout the year. It is recommended to record the plant's growth status every quarter, adjust the maintenance plan in a timely manner, and you will surely enjoy a visual feast of full blooms.