My tips

Clean Vase:

Start with a clean vase to prevent the growth of bacteria. Wash it with soap and water before placing the flowers.
Fresh Water:

Use fresh, room temperature water. Change the water every 2-3 days to keep it clean and provide nutrients to the flowers.
Cut Stems at an Angle:

Trim the stems at a 45-degree angle with sharp scissors or pruning shears. This helps the flowers absorb water more easily.
Remove Leaves Below Water Line:

Remove any leaves that will be submerged in water. Leaves in water can promote bacterial growth, which can shorten the life of the flowers.
Use Flower Food:

If provided, use the flower food that comes with the bouquet. It contains nutrients that can extend the life of the flowers.