The Polly Hill Arboretum is hosting a talk on grasses, sedges and rushes led by PHA research associate Melissa Cullina. Grasslike plants or graminoids tend to be ubiquitous but often overlooked. Not on Friday and Saturday, Sept. 21 and 22, when Ms. Cullina leads participants on a tour through the arboretum grounds giving center stage to the sedges and rushes. After the two-day tour, Ms. Cullina won’t be the only grass specialist on the Island.

The cost of the tour is $120 or $100 for PHA members. The cost is $80 for professionals associated with Island land management or conservation organizations.

For information, call 508-693-9426 or visit