Invasive plant species are a potential threat to both crops and native flora. Indeed, these species can disrupt ecosystems by competing with native species and occupying their range. It is therefore very important to know these species and their functioning. Among these plants, one species that is particularly present in urban wastelands and in uncultivated areas ; Bidens pilosa. It is native to South America and belongs to the Asteraceae family, which includes nearly 23% of invasive plants. The