Vegetative reproduction may begin as soon as 2-3 weeks after germination, and is possible from root fragments as short as 1 cm. Seeds may also be dispersed by water and ants. Competition In North America, Linaria vulgaris is generally considered a strong competitor, but is considered a weak to moderate competitor in Europe. Linaria vulgaris is able to quickly colonize open habitats, and is capable of adapting growth form to a wide range of conditions. Generally does well in moist areas with high fertility but will be displaced by other species when growing in less favorable conditions.
Plants growing in dry soils tend to be stunted, but are relatively persistent.
Seeds generally germinate in the top 2-3 cm of soil, and also at the soil surface. Competition Once established, high seed production and ability to reproduce vegetatively allow for rapid dispersal and high persistence. Control Extensive root system makes this species difficult to control. According to some studies, permanent long term control cannot be achieved by herbicide treatments. L. vulgaris is resistant to many chemicals such as 2,4-D amine and MCPA salt.