A new and distinct cultivar of Leucanthemum plant named ‘；Q3597-2’；, characterized by its compact, upright and mounded plant habit； freely branching habit； strong and upright flowering stems； no requirement for vernalization treatments to induce flowering； long flowering period； medium-sized single inflorescences with light yellow to creamy white-colored ray florets and bright yellow-colored disc florets； and good garden performance.
