Is Ageratum Invasive. It is a showy native plant that is considered a weed in the coastal plain growing along roadsides on moist ditch banks. Conyzoides is an annual erect herb reported as an invasive noxious weed in agricultural lands and as a coloniser of open fields and degraded areas causing crop yield reductions and affecting biodiversity Kohli et al 2006.
The ornamental varieties available to home gardeners are grown as annuals and are attractive to butterflies hummingbirds and insect pollinators. Eco-physiological performance of two invasive weed congeners Ageratum conyzoides L. It looks like the annual ageratum and in that regard is sometimes commonly called hardy ageratum.
Gas exchange and growth responses to nutrient enrichment in invasive Glyceria maxima and native New Zealand Carex species.
ComIt is widespread along roadsides and other disturbed areas especially where it is damp. And Ageratum houstonianum Mill in the Indo-Gangetic plains of India. Is an invasive weed that has severely infested cultivated lands and interferes with the growth of crops. Invasive perennials become weeds in a garden when the environment is in the plants comfort zone.