This auspicious day marks the marriage of Lord Krishna and Tulasi Devi. It marks the start of the marriage season in the Hindu culture. It is celebrated by adorning the Tulasi plant, chanting prayers, and drawing rangoli around the plant. Also, leaves from the Tulasi plant can be put into water and prasad to make it more saatvik and it can be offered to Lord Krishna because Tulasi is the most dear to Lord Krishna.
Mahek, Simren, Ishaan, Tulsi, Janki, Sneha, Manushi, and other sources