i Register
In some senses, fertilize is marked as figuratively. Watch for register when choosing this word.
verb
To make (the soil) more fertile by adding nutrients to it.
To make more creative or intellectually productive.
to fertilize one's imagination
He [countertenor Anthony Roth Constanzo] also enjoys being the catalyst whereby opera fertilises other art forms: recently, he's collaborated with Japanese kabuki actors, and a project with dancers from New York City Ballet is in the offing.
To cause to produce offspring through insemination; to inseminate.