Koi The largest selection of koi in New England! Traditional & Butterfly Fins Traditional Fin Koi Butterfly Fin Koi Select the size, color and style you want! Limited Winter Hours As the weather becomes colder we have limited hours. Click here to schedule a visit! Directions Dietter’s Water Gardens Limited Winter Hours Schedule a visit here 151 Mill Road, North Haven support@awatergarden.com 203-239-0128 About Us Directions Dietter’s Water Gardens Limited Winter Hours Schedule a visit here 151 Mill Road, North Haven support@awatergarden.com 203-239-0128 E-Newsletter Signup! Subscribe About Us