This is the 7336th most frequent Russian word.
гарднер
The Russian word "гарднер" typically refers to a surname (Gardner) and does not have a standalone definition.
Here, 'Гарднер' is used as a proper noun, referring to the author's surname.
Моя подруга любит книги Джона Гарднера.
My friend loves John Gardner's books.
In this usage, 'Гарднера' refers to a possessive form, connecting it to a method named after Gardner.
Техника Гарднера в садоводстве помогает выращивать здоровые растения.
Gardner's technique in gardening helps grow healthy plants.
Again, 'Гарднера' is used in a possessive form, referring to the articles written by Gardner.