'asparagic' is formed in English from the noun 'asparagus' with the adjectival suffix '-ic', ultimately derived from Latin 'asparagus'.

'asparagus' comes from Greek 'asparagos' (ἀσπάραγος), passed into Latin as 'asparagus', entered Middle English as 'asparagus', and the modern English adjective 'asparagic' was formed by adding the suffix '-ic'.

Initially the root word meant 'a young shoot' (the plant), and over time derivatives have come to mean 'relating to or like asparagus' in modern usage.