Registration is now closed for this event (4/1/21). Please visit our online calendar of events for other environmental stewardship opportunities. Thank you! Note: Participants are expected to wear face masks during this event. The event will be held outdoors and adhere to our COVID-19 social distancing policy. Plant trees for cleaner air and water in Baltimore County!  More than 32,000 trees have been planted throughout the Gunpowder Watershed by enthusiastic volunteers over the past 31 years, and we need YOUR…