How to hydroponically cultivate Calathea
Hydroponic cultivation of Calathea is loved for its clean and elegant characteristics, but the process requires mastery of professional skills. This article systematically explains from container selection to daily maintenance, combined with a scientific nutrient solution ratio, allowing you to easily achieve the hydroponic cultivation of Calathea.
Selection and Preparation of Hydroponic Containers
Advantages of Transparent Containers
It is recommended to use transparent containers made of glass or plastic, which are convenient for observing the growth state of the roots and changes in water quality. The height of the container should be 15-20cm, and the diameter should match the plant canopy.
Disinfection Process
New containers need to be soaked in a potassium permanganate solution for 30 minutes, and old containers must be thoroughly cleaned to remove scale, preventing the buildup of bacteria that could affect water quality.
Scientific Nutrient Solution Ratio
Calcium nitrate Potassium dihydrogen phosphate Magnesium sulfate Potassium nitrate 0.3g/L 0.2g/L 0.1g/L 0.15g/LAddition of Trace Elements
Add 0.05g of EDTA iron salt, 0.02g of zinc sulfate, and 0.01g of boric acid per liter of solution, using deionized water to ensure purity.
Daily Maintenance Management System
Light and Temperature Control
Ensure 4-6 hours of daily sunlight and maintain water temperature between 18-22°C. In summer, provide shading, and in winter, avoid contact with heating equipment.
Frequency of Solution Replacement
Change the nutrient solution every 7 days in spring and summer, and extend to every 10-12 days in autumn and winter. Retain 1/3 of the original solution when changing the liquid to maintain microbial balance.
Comprehensive Pest and Disease Control
Common Disease Treatment
For the initial stage of bacterial soft rot, spray with a 500-fold Bordeaux mixture solution, and remove the affected plant in severe cases. Regularly add 0.01% streptomycin sulfate for prevention.
Pest Control Measures
Use a 1000-fold solution of matrine water agent to control red spider mites, and for aphids, it is recommended to use a 2000-fold solution of imidacloprid. Update the nutrient solution after applying the pesticide.
Mastering these hydroponic techniques will allow you to enjoy the elegant posture of Calathea all year round. Regularly observe the plant's condition and adjust the maintenance plan in a timely manner; hydroponically cultivated Calathea can maintain its ornamental value for 3-5 years, becoming an ecological highlight in your living space.