Anthoxanthum odoratum
[1][2] It is grown as a lawn grass and a house plant, due to its sweet scent, and can also be found on unimproved pastures and meadows.Anthoxanthum odaoratum is a short-lived perennial grass that grows in tufts with stems up to 70 cm (28 in) tall.The scent is particularly strong when dried, and is due to coumarin, a glycoside, and benzoic acid – it smells like fresh hay with a hint of vanilla.[5][6] Anthoxanthum odoratum is native to Europe and temperate parts of Asia, but is widely introduced and naturalised so that distribution is now Circumpolar Wide-temperate.[7] It is grown by scattering seed on tilled ground in the spring through fall, germinating in 4 to 5 days.