parkomania

noun2

1. •
   Excessive or unreasonable interest in parks, gardens, and landscaping.

   • For the Prussian Prince Pückler-Muskau, landscaping was an obsession — “Parkomania”— that led to bankruptcy. — 2010
2. •
   Interest in parks and gardens; a fashion for lawns and parks.

   • By the beginning of the 1900s, the popularity of lawn parks, sometimes referred to as “parkomania,” was widespread. — 2008