Why Canopy Growth Withdraws Penelope, a Sustainable Medical Cannabis Strain Image Cannabis News September 4, 2024 Canopy Growth Polska Withdraws Popular Medical Cannabis Strain Penelope Due to Quality Concerns. Canopy Growth Polska is withdrawing its popular medical cannabis strain, Penelope (THC 8%, CBD 7%), due to aging genetics and quality concerns. While this decision may disappoint patients, the company is Medical Cannabis News Marijuana Business News Born 2 Invest