As a classic ornamental flower, the choice of soil changing timing directly affects the health of the plant. When the flowering period approaches,新手 gardeners often fall into the dilemma of "whether to change the soil". This article will analyze the best soil changing cycle and scientific operation skills based on the physiological characteristics of the plant.
The Golden Period for Changing Chrysanthemum Soil
1.1 Risks of Changing Soil During Flowering Period
Plants are in a state of concentrated energy output during the winter blooming period. Changing soil at this time will destroy the root nutrient transport system, leading to an early decline rate of 70% or more in flower buds. Experimental data show that the recovery period of plants changed during flowering can last up to 45 days, while plants not changed require only 20 days to naturally wither.
1.2 Advantages of Changing Soil in Two Seasons
In spring (March-April) and autumn (September-October), when the temperature is stable at 18-25°C, the plants are in a rapid growth period. Changing soil at this time can activate the germination of new roots, and with proper care, the plant can adapt to the new pot within 7 days, with a survival rate of up to 95%.
Five Steps of Scientific Soil Changing Method
2.1 Pre-treatment of Stopping Watering and Controlling Moisture
Stop watering 5 days before changing soil, and wait until the moisture content of the potting soil drops to 30%. Dry substrates can form a complete soil ball, which maximally protects the fleshy roots and reduces the root breakage rate by 40% compared to moist conditions.
2.2 Golden Substrate Formula
Use a golden ratio of decomposed leaf soil (50%) + pine needles (20%) + river sand (20%) + bone meal (10%). This combination ensures a porosity of 35% for breathability and maintains a slightly acidic environment with a pH of 5.5-6.5.
2.3 Art of Root Pruning
After removing the pot, retain 70% of the original soil and cut off the blackened and aging roots. Applying charcoal powder to the cut surfaces can prevent bacterial infections, which is 3 times more efficient than the traditional root-drying method.
2.4 Standard for Planting Depth
Place a 3cm layer of ceramic stones at the bottom of the new pot for drainage, and the pseudo-bulb of the plant should be 1cm above the substrate. Using the "filling soil while shaking" planting method can increase root adhesion by 60%.
2.5 Intelligent Maintenance During the Adaptation Period
After changing the soil, implement the "three control principles": control of light (diffused light), control of temperature (18-22°C), and control of water (water the roots after 72 hours). Using HB-101 plant vitality enhancer can shorten the seedling adaptation period to 5 days.
Special Scenario Response Plan
If there is an urgent need to change the soil (such as rescuing a plant with rotting roots), the "half-retention soil changing method" can be used: retain 1/3 of the healthy original soil, and the new soil should not exceed 50%. Combined with the potting method, gradually transition to a full substrate update.
By scientifically grasping the growth rhythm of chrysanthemum and following standardized operation procedures, even beginners can achieve a 98% success rate in soil changing. Remember the twelve-character motto "Best in spring and autumn, roots as the foundation, substrate adaptation" to ensure your chrysanthemum has lush leaves and flowers every year.