Why is the smart weed considered a weed?

Aggressive takeovers of space, proliferation of seeds, and well-being on soils high in calcium, low in nutrients, and poor in drainage are reasons why the smart weed is considered a weed. A weed often is defined as a plant whose growth is aggressive and whose value is denigrated, forgotten or unknown. The Polygonaceae family member in question offers erosion and runoff control, which cultivators tend to minimize because of the Polygonum genus member's aggressive, invasive tendencies when favored edibles and ornamentals vainly compete for resources and space.