Join Riverside Parks Director of Horticulture to see whats in bloom, discuss special topics in urban horticulture, and ask questions about the plants you see in Riverside. Summer on the Hudson events are free and open to the public. Seating is limited, unreserved, and available on a first-come, first-served basis. If there is heavy rain at the time of the event, the event will be canceled. For weather updates, check nyc.gov/parks/soh 2 hours before the event.