ˈæftɚ tˈiːtʃɪŋ æt jˈeɪl jˌuːnɪvˈɜːsᵻɾi ʌntˈɪl nˈaɪntiːnhˈʌndɹɪd fˈɪfti sˈɛvən, tɹˈɔɪɚ bɪɡˈæn hɪz kɚɹˈɪɹ æt nˈɔːɹθ kˌæɹəlˈaɪnə stˈeɪt kˈɑːlɪdʒ æz ɐn ɐsˈɪstənt pɹəfˈɛsɚɹ ʌv bˈɑːtəni.
After teaching at Yale University until 1957, Troyer began his career at North Carolina State College as an assistant professor of botany.