Synthetics
(z)-3-hexenal has a fresh, fruity aroma reminiscent of apples, cucumbers, grapes, and other fruits.
Luebke, William tgsc, (1990): Green fatty grassy weedy fruity apple
Bedoukian Research: Powerful green, grassy, apple-like
Powerful and diffusive. imparts a natural green top note to herbaceous and floral compositions.
Sigma-Aldrich: Apple; grape; lilac; orange; floral; pear; pineapple; strawberry; green; vegetable