What fertilizer is best for orchids? What fertilizer should be applied to orchids to make them bloom?

Many people like to grow orchids because they think they are elegant. However, it is easy for problems to occur when growing orchids indoors, so many people say that the fertilizer used for orchids is incorrect.

What fertilizer is best for growing orchids?

1. Organic fertilizer

Usually, when I talk about organic fertilizer, I mean cake fertilizer . After all, although other organic fertilizers in rural areas have good fertility, they are obviously not suitable for growing orchids. At least the smell is unbearable.

The cake fertilizer applied to orchids has a very obvious effect on the growth of orchid seedlings, with thick and dark green leaves, upright and elegant. It also has a good effect on the bud formation and flowering of orchids.

However, cake fertilizer is not harmless. It must be fermented for a long time before use. Although there is a method of soaking it in water to water flowers, the effect is not as good as mixing it with planting materials after fermentation.

If the cake fertilizer is not fermented well in the flowerpot, it will ferment again and cause root rot . Moreover, the unripe cake fertilizer can easily cause orchid diseases.

2. Fertilizer

The fertilizers sold in general agricultural supply stores can be applied when planting orchids (except those containing chlorine). Fertilizers with different nitrogen, phosphorus and potassium content can be used according to the different growth stages of orchids.

The most commonly used fertilizer is triple fertilizer , which generally contains 17% nitrogen, phosphorus and potassium each, and the potassium element exists in the form of potassium sulfate.

The effect of chemical fertilizers applied to orchid pots is very fast. Generally, the fertility can be clearly felt within 7 days. The leaves begin to turn green and the growth rate of new seedlings is significantly accelerated.

The disadvantage of chemical fertilizers is that they can easily cause premature aging of orchids, especially some older orchid seedlings. And you must be particularly careful when using them, otherwise there will be a risk of fertilizer damage.

3. Biological fertilizer

This is a fertilizer that orchid lovers have used more in recent years, that is, biological fertilizer . The main function of biological fertilizer is to mobilize the effective ingredients in the soil, activate them and make them easier to be absorbed and utilized by plants. Biological fertilizer is simple and convenient to use. It can be mixed into the planting material when planting orchids , and there will be no drawbacks of fertilizer damage.

This kind of fertilizer does not work quickly, and there must be a prerequisite, that is, the planting material itself has its own fertility, so that it can be actively mobilized. If you use pure inorganic planting materials, the use of biological fertilizers will basically have no effect.

What fertilizer is good for orchid flowers that have just grown buds?

It is better to apply phosphorus and potassium fertilizers. If others have already bloomed and the flower buds grow at the same time, but yours does not bloom, you can appropriately use potassium dihydrogen phosphate mixed with water at a ratio of 1:1000. Spray the leaves and flower buds to promote the rapid growth of its flower buds.

Potassium dihydrogen phosphate has a very high phosphorus and potassium content. It is a pure phosphorus and potassium fertilizer. Occasionally spraying it once or twice can promote the rapid growth of flower buds, but it is generally not recommended to fertilize it.

What fertilizer should be used to promote the flowering of orchids?

Orchid flowers can be accelerated by using fertilizers containing phosphorus and potassium , such as spraying potassium dihydrogen phosphate . In addition to applying some fertilizer, we must also pay attention to water control and ensure sufficient sunlight, at least 2-3 hours of sunlight per day. In addition, the temperature difference between day and night should be kept at around 10℃.