Gagnon's Landscaping has been serving the Merrimack Valley area of New England since being founded by Jason Gagnon in 1996. The company has grown to be a full service irrigation, hydro seeding and landscape provider including installation and maintenance. Gagnon's Landscaping services many clients from commercial to residential. Quality and fair pricing has been the keystone to success and what has helped grow a small back yard business into an organization serving over 300 customers each year. Irrigation Services - Consultation & Design, Installations, Maintenance & Repairs, Add-Ons, Rain Sensors, Moisture Sensors, Spring Start-Ups, Winterizations. Hydroseeding Services - Hydroseeding is the quickest and most effective way to establish a new luxurious lawn from seed.