What's Wrong with the Small Leaves of the Coin Plant
The coin plant is loved for its round and cute leaves, but many enthusiasts have noticed that the leaves of the plant become smaller as they are cultivated, which often reveals oversights in the maintenance process. This article analyzes the causes of leaf shrinkage from four key dimensions and provides actionable solutions.
Relationship between Light Requirements and Leaf Development
1.1 Impact Mechanism of Insufficient Light
The coin plant synthesizes nutrients through photosynthesis and requires more than 4 hours of scattered light exposure daily. Long-term placement in a dark environment can lead to hindered photosynthetic assimilation, resulting in a reduction of the leaf diameter by 30%-50%. It is recommended to expose to direct morning sunlight in spring and autumn and use a shade rate of 40%纱帘 to filter strong light in summer.
Optimization Solutions for Nutrient Supply System
2.1 Strategy for Mixing Base Fertilizer and Topdressing
In soil cultivation, it is recommended to mix decomposed sheep manure as a base fertilizer, and add 0.5g of slow-release fertilizer granules per liter of water in hydroponic systems. During the growing period, supplement a balanced liquid fertilizer (N-P-K=20-20-20) every 15 days, and combine it with weekly foliar spray (diluted 2000 times), which can increase the leaf diameter by 40%.
Key Points of Temperature Control
3.1 Seasonal Management Tips
The optimal growth temperature range is 18-24°C, and it is necessary to maintain the night temperature above 8°C in winter. When the temperature is below 12°C, it is recommended to use a plant heating mat, place the cultivation container on the mat, and set a constant temperature mode. In the high-temperature period of summer, cool down through spraying and maintain air humidity above 60%.
Core Technology of Water Quality Management
4.1 Maintenance Specifications for Hydroponic Systems
In hydroponic cultivation of the coin plant, change the tap water that has been exposed to sunlight for 2 days every week, and make sure the water temperature is consistent with the room temperature. It is recommended to add 2-3 drops of chlorine remover and place an activated carbon packet to absorb impurities. When an increase in root mucilage secretion is observed, immediately soak and disinfect with a 0.1% potassium permanganate solution.
By systematically adjusting the four elements of light, nutrition, temperature, and water quality, and combining regular pruning of old leaves (keeping 3-4 functional leaves), the leaf diameter can usually be restored to the normal range of 3-5 cm within 2-3 growth cycles. It is recommended to measure the size of new leaves with a caliper every month, establish a growth record for timely adjustment of the maintenance plan.