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Use perlite for plants

Perlite für Pflanzen verwenden - FARBIO® - Nachhaltige Bio-Flüssigdünger aus Hamburg

Perlite is a volcanic material that has benefits for a variety of uses, from gardening to insulation in construction. It forms when molten lava cools and quickly solidifies. Perlite comes in many sizes from 1 millimeter to 10 millimeters in diameter. The result is an extremely lightweight material with amazing properties that can help plants grow.

What is perlite?

Perlite is a white volcanic rock that when heated causes it to pop up and form a structure evolved like popcorn. This mineral is then very dusty, can decompose under pressure and decomposes on its own after about 5 years. It is also called perlite. In horticulture and among houseplant lovers, it is often used as a mineral additive for soil.

What can it be used for?

Perlite has many uses: in addition to being used in garden beds and pots, perlite can also be used as an insulating material and even as a filter aid. Often you can buy it in big bags. It is most commonly used privately as the sole mineral substrate or as an additive to potting soil or other mineral material.

Application: Soil aggregates

Potting soil is often too compact and not sufficiently aerated. There is also an increased incidence of pest and disease infestations and root rot. A solution to this problem can be aggregates and soil conditioners. These are added to the soil or potting soil and improve either the structure , water holding capacity, nutrient storage or air circulation. Different soil additives have different positive effects!

Is perlite a fertilizer?

Perlite does not store any water or nutrients and therefore does not bring any nutrients with it, such as compost does. Therefore, sufficient fertilization is mandatory when using perlite.

The complete FARBIO® product portfolio can be used safely for your mineral substrates and will not burn the roots! The FARBIO® NPK organic liquid fertilizer for green plants is very well suited to providing your plants with the essential main nutrients and thus helping them to grow healthily in the long term. However, we note that the organic liquid fertilizer is brown in color and can stain the water.  

Is perlite worth it in soil?

The volcanic rock has many advantages: It gives potting soil a loose texture and allows plant roots to grow healthily through sufficient oxygen. In addition, it is sterile and pH-neutral, making it suitable for mineral and hydroponic substrates for indoor plants. Compared to others, this soil additive is relatively inexpensive to obtain and is available in different granulations.

Perlite is ideal as a cultivation material, since seedlings and seedlings hardly need any nutrients. Propagation of indoor plants with moistened perlite also works very well. For larger plants, other substrates should be used, since perlite is very light and therefore does not provide enough support for the plant.

Mix substrate for plants

When adding perlite to conventional soil, it is recommended to incorporate at least 30% in order to get the most out of perlite's properties. Because it can't hold much water, your soil will dry out faster than with regular soil. This reduces the risk of waterlogging and the roots do not rot. For example, components such as biochar, expanded clay, pine bark, pumice, coconut fibers or compost can also be mixed with medium-coarse volcanic perlite. It is important that the ratio of coarse, medium-coarse and fine components is the same. A good culture medium will fall apart again after being squeezed in the hand.