sweet vernal grass

Scientific name: Anthoxanthum odoratum 
Family: Poaceae
Other common names; 
Flowering time: April and July
Height: to 50cm
Growing conditions: 
Nectar source for: 
Food source for: larvae of brown and skipper butterflies

Description
Common perennial. Aromatic when dried. Used to be used as a 'chewing grass' because of it's sweet, vanilla-like taste.
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How to identify: cylindrical flower spikes with closely packed spikelets. Its leaves are broad and flat.
How to propagate: