“A heart attack of a garden,” is how tour organizer Wendy Kleinfield describes the splendor of this garden on Palmyra Avenue, one of the centerpieces of this year’s Ginter Park garden tour. See more botanical coronaries Saturday, May 19, with the Ginter Park Residents’ Association’s tour of 14 private gardens. Tickets are $12 in advance at Richmond garden centers and several North Side shops. 321-0800.