How to fertilize a yew bonsai? The correct method is here
The potting soil of Hongdou brand yew is made from wild native soil mixed with nutrient soil. The soil is loose, high in organic matter, strong in water retention, fertilizer retention and air permeability, full of nutrients, and has a pH within 7. For bonsai kept for more than three months after purchase, the roots should be fertilized appropriately, once a year, best in spring or early autumn, generally with a compound fertilizer containing nitrogen, phosphorus and potassium or an organic fertilizer.
Compound fertilizer is applied by watering, dissolved in water first and then poured on, at a concentration of 0.5%-1%; organic fertilizer is applied by burying. To enhance the ornamental value of the plant, a foliar fertilizer such as monopotassium phosphate can be sprayed on the plant appropriately.
1. Application method of foliar fertilizer
Spraying concentration: Grasp the optimal concentration when spraying foliar fertilizer to achieve twice the result with half the effort. If the concentration is too high, fertilizer burn or toxicity symptoms easily occur; if the concentration is too low, the purpose of fertilizing cannot be achieved. The optimal concentrations of commonly used fertilizers are: monopotassium phosphate about 0.3%-0.5%, 18 grams-22 grams per 1 backpack sprayer.
Spraying method: Because nutrients are easily absorbed through the underside, spraying should take into account both the front and the back when applying. The standard is that both sides of the leaf are moistened by the fertilizer solution without dripping. Only by covering both the front and back sides can the leaves absorb it quickly.
Spraying time: When spraying, the leaves are usually required to remain moist for a certain period of time, so that absorption is fast and the amount absorbed is large. It is best on a windless cloudy day or in the evening of a sunny day to prevent the foliar fertilizer from being dried by the wind quickly. Spraying should be avoided when the sun is blazing high.
Precautions: When preparing the solution, be sure to stir it evenly and use it immediately after preparation. Foliar fertilizer should not be sprayed too many times; spray once every 20 days.
2. Application method of rooting agent
Within one week after transplanting and watering, apply a rooting agent once, using the watering method for the yew. The application concentration is prepared according to the product instructions, generally 1 packet of 10 grams of rooting agent mixed with one bucket of water (20 jin). For 1-3 years old, water half a spoonful; for 4-5 years old, water 1 spoonful; for over 5 years old, 1 and a half spoonfuls. The concentration of the rooting agent should not be too high; if too high, it easily causes hormone poisoning, premature aging of the plant and other adverse conditions.