How many days does a bouquet last in a vase? A professional flower delivery service takes care of fresh flowers and ensures that a bouquet can last for 7-10 days in a vase. Additionally, changing the water in the vase helps to prolong the life of a bouquet and enjoy its beauty. Therefore, fresh flowers will stay alive for long with Sai Flower help: https://saiflower.com/flower-delivery-in-kalkaji/. Sai Flower, Shop No. 1, Sai Mandir, Lodhi Rd, Gokalpuri, Institutional Area, Lodi Colony, New Delhi, Delhi 110003. Phone: 088020 04527.