Mayor to plant first ‘Birthday Blossoms’ tree in March 3,000 cherry trees will be planted this spring in celebration of Vancouver’s 125th birthday, with Mayor Gregor Robertson planting the first Birthday Blossoms tree at City Hall at 10am, March 2nd, 2011. The Vancouver Cherry Blossom Festival (www.vcbf.ca) and the David and Dorothy Lam Foundation are offering Metro…