While Pennsylvanians prefer to ask a groundhog when spring officially starts, it’s technically always in late March when the trees begin to bloom again. Tree Pittsburgh is throwing a fundraising party to celebrate the start of the season. Each guest will visit three different homes in Lawrenceville for drinks and hors d’oeuvres. The final destination and dessert course will take you to the Butler Street Lofts, who is sponsoring the party. Those who RSVP will receive an email with details, including the schedule and locations for the evening. All proceeds benefit Tree Pittsburgh. Make sure to indicate dietary preferences when registering. Space is limited to 80 guests.