Black leaved Cow Parsley - Anthriscus sylvestris "Ravenswing"
Family: ApiaceaeCommon name: Black Cow Parsley Plant Classification: Hardy perennial Minimum Height: 60 cm Maximum Height: 90 cm Packet Content(approx.): 30+ My seeds didn't germinate so put them in the fridge for 2 months+ in a pot in a zipped bag, then brought out, 2 days later they germinated and already sprouting nicely after only a few days. Googled and found Sarah Raven says they are biennial and another site says perennial? Which is correct and how should I care for them over winter as small plants? In the ground or in a zippy greenhouse or in the house?