fertile
adj.adj. able to produce many plants, crops, or babies. You can also use it to describe a mind that has many new and creative ideas.
adj. capable of producing abundant vegetation, crops, or offspring; in a figurative sense, prolific in inventing or producing ideas. Often modified by degree adverbs such as 'highly' or 'extremely'.
The valley has very fertile soil for growing grapes.
Farmers moved to the river banks because the soil was fertile enough to support two harvests every year.
The professor's fertile imagination allowed him to synthesize disparate historical facts into a compelling narrative that captivated his students and peers alike.
From Middle English, from Middle French fertile, from Old French fertile, from Latin fertilis (“fruitful, fertile”), from ferō (“to bear, carry”).
Commonly modifies nouns like 'soil', 'land', 'ground', or 'imagination'.