up to 10g or cultivation of 5 plants
article: Cannabis in the Czech Republic Possession of up to 10g or cultivation of up to 5 plants is an infraction subject to a minor fine – mostly not enforced. Medicinal use legal and regulated since 2013.
You maybe already asked yourself "Is Cannabis in Czechia legal?" In Czechia Cannabis (or Marijuana) is decriminalized for recreational and legal for medical use. About 15.2% of the people in Czechia used Cannabis within the last year.