Giant goldenrod displays a wide geographical presence, originating in North America and expanding across the continents. This plant has firmly established itself in its native range, while it has been introduced to both Asia and Europe. In its introduced areas, giant goldenrod is sometimes thought to be a vigorous spreader, with a potential to affect the regional ecosystems gently. The nuanced interplay between giant goldenrod's proliferation and local flora may necessitate careful observation to mitigate any gentle impacts on biodiversity.

Giant goldenrod originally hails from North America, but its adaptable nature has allowed it to spread to various areas around the globe. Giant goldenrod fits the definition of a weed due to its aggressive colonization habits and relentless will to survive and spread. It can swiftly take over a garden or farmland, crowding out native plants and disrupting local ecosystems. Giant goldenrod possesses intensified reproductive abilities, producing a copious amount of seeds that can survive in the soil for years. Its tall stature, often reaching heights of up to five feet, gives it an advantage when competing with other plants for sunlight. In addition, its deep root system allows it to resist droughts, adding to its overall resilience. The main mode of spread for giant goldenrod is through its seeds, which disperse broadly via the wind.

The best season for the removal of giant goldenrod is the early spring before the plant starts to flower and set seed. Here are some effective methods for controlling or removing this plant: