Adjectives

(a)fertilecapable of reproducing
(s)fecund, fertile, prolificintellectually productive“a prolific writer”, “a fecund imagination”
(s)prolific, fertilebearing in abundance especially offspring“flying foxes are extremely prolific”, “a prolific pear tree”
(s)fat, fertile, productive, richmarked by great fruitfulness“fertile farmland”, “a fat land”, “a productive vineyard”, “rich soil”