Erect hedgeparsley is a plant with a broad ecological footprint. Native to East Asia and parts of Europe, it thrives in temperate regions across the Northern Hemisphere. Over time, erect hedgeparsley has been introduced to various other temperate zones around the world. It is now firmly established in many areas outside its native range, having naturalized across several continents in both hemispheres.

Erect hedgeparsley originated from Eastern Asia but has since spread globally. This plant is classified as a weed primarily because of its aggressive and invasive nature, which enables it to conquer and dominate various types of environments, outcompeting native species. Its seeds are small and adhesive, maximizing their dispersal potential. These seeds latch onto animals, people, and even machinery, allowing them to spread great distances. Furthermore, erect hedgeparsley is a highly resilient species, with the capacity to thrive in varying climatic conditions and soil types, which contributes greatly to its weedy status. The plant’s hardiness and rapid growth allow it to quickly take over garden grounds if not properly managed. It's capable of crowding out more desirable plant species, thus devastating the biodiversity of the garden. Because of its ability to reproduce and spread quickly, erect hedgeparsley can be particularly harmful to gardens and landscapes.

The ideal season for the removal of erect hedgeparsley is during the late spring and early summer, before it produces a lot of seed. This is crucial as it can prevent further seed dispersion, which can lead to infestations.