What defines a weed in horticulture?

In horticulture, a weed is defined as a plant that grows in a location where it is not wanted. This definition emphasizes the context and the impact of the plant's presence rather than its specific characteristics. Weeds can compete with cultivated plants for resources like light, water, and nutrients, thus they hinder the growth of crops and ornamental plants.

Contextually, although some plants may have toxic properties, producing fruit, or being classified as flowering plants does not automatically categorize them as weeds. A weed is characterized primarily by its location and the negative influence it has on desired plants, regardless of its inherent traits like being toxic, fruit-bearing, or floral. This understanding helps in managing weeds effectively in both cultivated areas and natural ecosystems.