A layer of mold has formed on the surface of my substrate, what can I do?

The cause is the saprophytically living fungus Peziza ostracoderma. This fungus does not damage garden crops; however, it is a visual problem. In extreme cases, the oxygen supply of the roots can be hindered. The fungus proliferates via spores which are spread easily by wind or during watering. The spores generally die by themselves after a short time.

Getting rid of the mold is quite simple and effective: Water with Dithane Ultra, 0.2 to 0.1 %. The application can cause a light coating on the leaves; we recommend a short watering with clear water afterwards. We are not aware of any plant damages that can occur at the mentioned concentration. Furthermore, the following preparations as fungicides are known: Polyram Combi, Euparen WG, Ortiva. We have, however, no empirical values for these.