Limited awareness about nature and its species can have a negative influence on children's relationship to nature. Plant species recognition and outdoor education are perhaps the easiest way to approach nature relationships and increase knowledge. Unfortunately, it has been shown that people do not recognize plant species very well. This phenomenon is called "plant blindness". This study presents information about the phenomenon in Finland. The purpose of this research was to determine how well Finnish students from different age groups recognize plant species and which variables explain recognition of plant species in general education in Finland. The subjects were pupils from primary school to university teachers. A total of 754 people took part in the research. The results showed that Finnish pupils do not recognize plant species very well, with wide variations in responses between student levels. Species recognition skills improved from primary school to university teachers.