QUALITY and FERTILIZER

QUALITY
Keep in mind that when growing Bonsai, you use very little soil. Therefore, you can afford to buy the best. Most Bonsai experts will recommend you use pumice, perlite, and lava rock in that they are great at holding water, lightweight, and can be found at just about any gardening center or nursery. The one drawback is that while these are quality components, they also break down. That means in one to two years, you will be repotting your Bonsai.

Another option to consider in addition to these mediums is decomposed granite. This can be run through a screen to ensure you get the particle size needed and it is great for drainage. The only downfall to this type of soil is that it is heavy and does not retain water well.

Just be sure you go with the best you can buy. Since Bonsai take years to train, you certainly do not want to skimp on the soil only to set yourself up for problems. By providing the best medium possible, you have a much better chance of growing a healthy and happy Bonsai that will respond to the training much better.


FERTILIZER

Regardless of the type of fertilizer you buy, it will be comprised of a NPK value, which is nitrogen, phosphorous, and potassium. With Bonsai, using the right type of fertilizer is
crucial. Each of the fertilizer, each of the three elements playsa very important role.

• Nitrogenous –Helps with the overall growth of the plant/tree
• Phosphorous – Promotes bud and fruit development
• Potassium – Produces a hardy tree for the winter months

In the early spring months, you will need fertilizer that has a strong nitrogen value. Then in the summer and fall, the potassium will need to be high. You will find fertilizers sold specifically for Bonsai but remember that most fertilizers will do just fine, as long as the nutrient value is correct.

Typically, you would fertilize your Bonsai starting during the early spring monthsand into fall. You then want to add a firm fertilizer no more than twice a month and liquid fertilizer weekly, which will help the leaves.

The best way to fertilize is to use half the amount recommended for very young plants and trees. You also do not want to fertilize your Bonsai until it has been repotted for two months. The following guide will help:
  • Early spring and summer – Use fertilizer high in nitrogen, which will stimulate growth. The values should be 15-10-5 (nitrogen/phosphorous/potassium). If the plant or tree is already formed, then use a 5-10-5 value.
  • Late summer and fall – This will stop the growth stimulation of buds, allowing the Bonsai to survive these seasons. In this case, you would want a 5-5-25 value, meaning the potassium is quite high.

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