Given the right care, you can enjoy your cut flowers for at least a week.
Always use a very clean vase and use fresh, lukewarm water. This will prevent bacteria from ruining the flowers.
Add commercial cut flower food to the water.
Strip all the leaves below the water level. Leaves that are submerged will rot.
Take at least 1 to 2 inch off the stems, making a 45 degree cut with a sharp knife or sissors.
Make sure your bouquet has room to move around the mouth of a vase; flowers won't keep well if they're too crowded.
Keep your flowers away from direct sunlight, heat and drafts.
Change the water and flower food every three to four days and recut
the stems at the same time. Always add warm water, not cold to the
vase. It is very important to change the water completely. Do not just
keep adding more water to the already existing water.