Meerkerk Rhododendron Gardens are nonprofit gardens in Greenbank, Washington, a settlement on Whidbey Island in the United States. The private garden sits on a 53acres site and has been operated by the Seattle Rhododendron Society since 1979; it was originally built by Ann and Max Meerkerk in the early 1960s. The facility has 10acres of display gardens that include thousands of rhododendrons and an additional 43acres of woodlands with hiking trails.[1] [2]