Blue Hash, also known as Blueberry Hash, is a hybrid strain of cannabis. It is a cross of Blueberry and Hashplant; the former contributes colorful hues and sweet scents while the latter contributes heartiness and increased resin production. The resulting strain produces berry scents with pungent, earthly undertones. According to Leafly, Blue Hash creates "powerfully relaxing effect that is a great way to unwind at the end of a long day or at night before bedtime". The website recommends the strain for alleviating insomnia and stress.