Do want to help make Greenpoint greener and learn how to take care of the trees that line our streets? Greening Greenpoint and Newtown Creek Alliance are teaming up this Sunday, June 24th, to care for street trees on Norman Avenue, and afterwards explore the native wildflower green roof at Kingsland Wildflowers (520 Kingsland Ave). From 10am till noon, volunteers will improve the street tree beds then relax with refreshments and a tour of of the green roof.