everything you need to know

It's not. Mycorrhiza is a symbiosis of plants and soil (mycorrhizal) fungi. These live in or on the roots of the plant and support it throughout its life. They improve the uptake of fertiliser and water from the soil. Unlike fertiliser, you do not need to add mycorrhizal fungi repeatedly. For fertilising plants, we recommend the all-natural fertiliser Conavit.

Unfortunately, neither watering nor spraying can be used. Mycorrhizal fungi need to attach to the root system of the plant. Therefore, Symbiom products must be applied directly into the soil close to the plant’s roots.

You can. Just be careful, the mycorrhizal fungi must get as close to the roots of the plant as possible. Therefore, it must be applied to the root zone, either by digging the soil out, digging holes (15-20 cm deep) or using an injector.

Mycorrhizal fungi do not need dormancy. They copy the life cycle of the plant in whose root system they live.

There are several species of mycorrhizal fungi. The individual Symbiom products therefore contain only the species that correspond to the plant group and are most beneficial for them. Always choose the right mycorrhizal product according to the plants you want to grow.

Mycorrhizal symbiosis can be found in more than 80% of the world's plants, except for the Brassicaceae, Amaranth and Dianthaceae families, etc. For representatives of these plant families, it's not worth applying mycorrhizal preparations.

Each of our products targets a specific plant group according to the corresponding mycorrhizal fungi species. For easy orientation in Symbiom products, you can use the search box in the header our table with an overview and suitability of plants.

You cannot. Even a single mycorrhizal spore can inoculate the root of a plant and gradually colonise its entire root system, but this takes several months. Therefore, it's preferable to apply more spores to the root zone at the same time to accelerate root colonisation and allow the plant to benefit from mycorrhiza as soon as possible.

Mycorrhizal fungi are relatively few in some soils and may be at a greater distance from newly formed plant roots. This can slow down the formation of mycorrhizal symbiosis and have a positive effect on plant growth. The sooner mycorrhiza is established, the better for the plant. In addition, in some soils, mycorrhizal fungi populations can be significantly negatively affected by previous agrotechnological practices (deep ploughing, use of fertilisers, pesticides, etc.), so the application of mycorrhizal fungi is necessary to revive the soil.

Pesticides applied to plant leaves generally have no adverse effects on the formation or function of mycorrhiza. On the other hand, some systemic or contact fungicides applied to the soil can inhibit mycorrhizal fungi and soil fumigants can even kill them.

High doses of fertilisers, especially phosphate fertilisers, negatively affect the development of mycorrhizal fungi in the soil. In the case of gradual-release organic fertilisers, the possible inhibitory effect is significantly less than with inorganic soluble fertilisers.

Mycorrhizae generally improve the health and vitality of plants and their roots. Therefore, plants with mycorrhizal fungi better resist infections caused by plant pathogens (especially root pathogens).

Mycorrhizal fungi are not naturally present in composts. During production, the compost is often heated to temperatures of 50-60 °C, which kills mycorrhizal fungi and other beneficial micro-organisms.

Some composts are compatible with mycorrhizal fungi and therefore their use is unlimited. Others, however, may have a high salt or nutrient content that inhibits the mycorrhizal fungi.

Spores of arbuscular mycorrhizal fungi are highly resistant and can live in the soil for many years without the roots of the host plant. Under optimal conditions, they survive up to years, but at least two.