What kind of fertilizer to use for camellia
Camellias are favored by gardening enthusiasts for their elegant blooms and evergreen characteristics, but improper fertilization often leaves flower lovers in a dilemma. Mastering scientific fertilization methods not only promotes bud differentiation but also avoids the risk of fertilizer damage, allowing camellia plants to bloom in more vibrant colors.
Nutritional needs during the growth cycle of camellias
Base fertilizer selection and application techniques
It is recommended to use a mixture of decomposed sheep manure and bone meal in a 3:1 ratio when repotting. This type of organic base fertilizer can release nutrients continuously for up to 6 months. Adding 5% sulfur powder can maintain the soil pH between 5.5-6.5, effectively preventing iron deficiency chlorosis in camellias.
Seasonal nutritional supplement plan
In the spring budding stage, use a 1:1000 diluted fish protein liquid fertilizer, combined with a 0.2% ferrous sulfate solution. During the high-temperature period of summer, switch to diammonium phosphate foliage fertilizer, and spray the back of the leaves every 15 days in the evening. Before the blooming period in autumn and winter, switch to high-phosphorus water-soluble fertilizer, combined with EM bacteria solution to enhance fertilizer utilization.
Scientific fertilization operation specifications
Fertilization frequency and dosage
For potted camellias, it is recommended to follow the principle of 'frequent application of light fertilizers', with a top dressing every 15 days during the growing period. For a 30cm diameter pot, the dosage should not exceed 20 grams of solid fertilizer each time, and the dilution concentration of liquid fertilizer should be controlled between 800-1200 times. Special attention should be paid to pause root fertilization during the plum rain season.
Different fertilizer application methods
Granular slow-release fertilizer needs to be buried in a circular pattern around the pot edge, with a depth of 5-8cm. Loosen the soil before applying liquid fertilizer and cover with pine needles after application to retain moisture. Foliage fertilizer should be sprayed avoiding the strong midday sun, focusing on the back of new leaves, and combining with 0.1% detergent can enhance the adhesion effect.
Emergency response plan for fertilizer damage
If leaf edges become burnt, immediately rinse the pot soil with water three times consecutively, and use activated carbon to absorb any remaining fertilizer. For plants with damaged roots, prune 50% of the branches and leaves to reduce transpiration, soak with carbendazim, and then repot with coarse sand to regrow roots. During the recovery period, water with seaweed extract once a month to stimulate the growth of new roots.
By establishing a fertilization log to record the time, type, and amount of each fertilization, and adjusting the plan based on the growth state of the plant, regular testing of soil EC values can effectively prevent fertilizer damage. If the value exceeds 1.5mS/cm, timely remedial measures should be taken.