Five protections to help camellias safely get through the rainy season: control water, replenish fertilizer, prune, and prevent disease
During the rainy season from April to August each year, if there is the slightest carelessness in the management and care of potted camellias, the branches and leaves may wilt, turn yellow, or drop, or the plants may suffer physiological damage that affects their normal growth for the whole year, and in more serious cases, the entire plant may die. To help potted camellias safely get through the rainy season, the "five protections" must be carried out.
1. Prevent water accumulation in the pot
When potted camellias are placed outdoors, water accumulates easily, making the potting soil too sticky and causing severe oxygen deficiency, which is extremely harmful to camellia root growth, and especially damaging to one- and two-year-old potted seedlings. Therefore, before the rainy season arrives.
Camellia: Growth habits and cultivation management of Camellia japonica
1. Replace potting soil with poor drainage, or loosen the soil on the pot surface in time, and appropriately mix in a small amount of decomposed sawdust and rain-washed coal ash.
2. Remove obstacles that affect drainage or correct the position of the pad over the drainage hole at the bottom of the pot. During the rainy season, before each heavy rain, the pot can be tilted slightly to prevent too much rainwater from falling into it; after the rain stops, set the pot upright again and pour out the accumulated water. If waterlogging damage has already occurred, first place the potted plant in a shady, cool place, avoid direct sunlight, and after it recovers, gradually move it to a suitable location for normal care.
Camellias after rain
2. Prevent prolonged rain exposure
Potted Camellia japonica is relatively sensitive to water requirements. Too little water will cause wilting, yellow leaves, and even leaf drop; but too much rain will affect plant growth. Especially during long periods of continuous cloudy and rainy days, the camellia plant cannot see the sun, which can also cause yellow leaves and leaf drop, affecting photosynthesis and the production of nutrients to supply the plant. So as soon as the weather clears, the pot should immediately be moved into the sunlight to receive full sun, so as to prevent the branches from becoming weak and spindly.
3. Prevent loss of nutrients from the potting soil
During the rainy season, nutrients in the potting soil are lost. If corresponding measures are not taken, the normal growth of camellias will be affected. Therefore, potted flowers should be fertilized timely and in appropriate amounts.
Specific methods
1. Crush dry fertilizer and spread it evenly on the pot surface, then use a tool to gently loosen the potting soil so that soil and fertilizer mix; after being washed by rain, the fertilizer solution can seep into the potting soil.
2. The amount of fertilizer applied during the rainy season must be small, and it must be fully decomposed before use.
4. Prevent excessive vegetative growth
During the rainy season, the air humidity is high and light is insufficient, which often causes the branches and leaves of potted camellias to grow excessively. Therefore, prune branches and thin leaves appropriately, control watering, apply less nitrogen fertilizer, and if necessary use foliar spraying (that is, fertilization outside the roots) to make the branches sturdy, enhance disease resistance, promote flower bud differentiation, and ensure beautiful blooms next spring.
Camellia: Fertilization tips for potted camellias
5. Prevent damage from pests and diseases
If ventilation is poor, camellia plants are highly susceptible to damage from pests and diseases. Therefore, during the rainy season, the positions of potted flowers must be raised appropriately, preferably arranged in steps. Potted flowers must not be placed too densely. If cloudy or clear weather occurs, let the potted flowers receive sufficient light, so as to play a role in sterilization and disease elimination. If the plant is found to have already suffered pest or disease damage, timely prevention and treatment should be carried out.
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