Many pathogenic fungi settle on the roots of plants. Here is a natural technique to avoid this kind of inconvenience.
Below is a link to a page from a Quebec site that explains the benefits of Trichoderma. It is a fungus that settles on the roots of plants and prevents the arrival of pathogenic fungi. The article is a little technical but very clear. The conclusion is great.
Plant with potting soil that contains Trichoderma and the risk of root pathology becomes almost nil.
http://pub.craaq.qc.ca/fonds/202-T_resume.pdf
