Denigration is the accusation that is made to another person that can cause it to impair their honor, dignity or reputation, that is, it refers to saying in public, or writing negative things against the good name, fame and honor of a person; especially when what is said or written is false. The act of denigrating consists in staining (symbolically) the fame, reputation or opinion of someone. therefore, this act presented in the question is considered denigration.
The sentence which most improve the sentence by adding description is this: 'there are plenty of vegetables, flowers, and plants at the community garden where I work. This sentence is descriptive in nature and tell us some of the charactersitics of the place where the speaker works.
