What fertilizer is good for radish?

Overview of black pine fertilization

If you want the black pine to grow taller, you can choose to apply phosphorus fertilizer, which has a significant promoting effect. The effect of nitrogen fertilizer on black pine is slightly greater than that of potassium fertilizer, while the effect of phosphorus fertilizer on the growth of black pine is more obvious. Top dressing such as compound fertilizer can be carried out regularly in spring and autumn, and appropriate fertilization can be done.

Black pine does not require much fertilizer, so only some dilute fertilizer is needed. Excessive fertilization can easily cause fertilizer loss.

How to fertilize black pine to make it grow faster

Fertilization season and time

Fertilization in spring: Pruning during the vigorous growth period in spring. It is not recommended to prune the black pine bonsai in spring during normal maintenance, so what you need to do is to apply more fertilizer and retain more water to allow it to grow quickly and vigorously.

Autumn fertilization: Fertilization should start in early October every year, once every 15 days, for two consecutive times, and apply more phosphorus and potassium fertilizers to accumulate nutrients.

Fertilization in winter: Black pine trees scheduled for exhibition in winter are best placed in a greenhouse for maintenance. Generally, black pine trees placed in a place with sufficient light and good ventilation will have the soil in the pot dry out easily. Black pine also likes water and fertilizer, so it is necessary to check the dryness and wetness of the soil in the pot in time.

Fertilization method

Black pine is relatively resistant to barrenness, but it can also be fertilized. Fertilization should be mainly with decomposed organic fertilizer and cake fertilizer. Nitrogen fertilizer can be mixed in spring to stimulate the growth of new branches and leaves. Compound fertilizer can be mixed in autumn to enhance the ability to resist cold. Note that nitrogen fertilizer should not be used exclusively in autumn, otherwise the new branches and leaves will be too delicate and easily affected by frost.

Points to note when fertilizing black pine

Preventing leaves from turning yellow: When the leaves of black pine turn yellow, the yellow leaves should be cut off. Ensure half a day of sunlight every day, stable light in spring and autumn, and avoid strong direct sunlight in summer.

Changing the soil: Black pine is suitable for growing in loose, fertile, air-permeable and well-drained acidic soil. Use humus soil, garden soil, and sand river soil in a ratio of 1:2:2.

Root pruning: Cut off rotten and dry roots in time to avoid yellowing of plant leaves due to insufficient nutrition, or use carbendazim to sterilize and disinfect the roots to prevent it from affecting the growth of the entire plant.

Change environment: Black pine is suitable for growing in a cool and ventilated environment. It needs to be placed on the windowsill or balcony at home, in a location with sufficient sunlight and ventilation.

Pruning: When the leaves of black pine turn yellow, the yellow leaves should be cut off. The pine should be exposed to sunlight for half a day every day. The lighting conditions should be stable in spring and autumn. It should be avoided from strong direct sunlight in summer and placed in a well-lit location indoors in winter.

Spraying drugs: When the leaves of black pine turn yellow, you can use carbendazim to spray the leaves to deal with the disease problem. Red blight is a common disease of black pine. Use diluted carbendazim and use 500ml at a time.

Light requirements: The black pine's requirement for light is sufficient light. Increasing light allows the black pine to photosynthesize better and stimulates the production of chlorophyll.