Guided tree walks will be held Sunday at Cloud’s Hill Victorian House Museum at 4157 Post Road.

Cloud’s Hill has been referred to as the West Bay Arboretum. Three of its trees have received certificates from the Rhode Island Tree Council for their size. The council maintains a registry of Rhode Island’s largest trees, based on height, size of canopy and diameter at breast height.

Since 2002, the R.I. Tree Council has administered the Helen Walker Raleigh Champion Tree Program, whose goals are “to find and maintain a computerized database of big trees; to collect research data on big trees; and to assist tree owners on how to care for big trees.” The research data is shared with USDA - Forest Service, college and university scientists, where it is used to study climate change, develop new plant selections and learn what’s behind big tree longevity.

The museum has received two certificates for second largest and one for third largest trees of their kind in Rhode Island. Our Sawarra False Cypress, Chamaecyparis pisifera, ranks third with a circumference of 85 inches, height of 76 feet, and crown spread of 39 feet. The second giant is a Red Oak, Quercus rubra, with a circumference of 199 inches, a height of 101 feet, and a crown spread of 97 feet. The Camperdown Elm, Ulnus camperdownii, is ranked second in the state, as well.

Guided tree walks will introduce the visitor to these specimens and more than 30 others.  Tours begin at 1 and 2 p.m. The fee is $5 per person.