For longer lasting and better looking floral arrangements

Most floral arrangements will last between 4 - 7 days, depending on the type of flower and the conditions they endure. A little extra care can make a big difference. Take care of your flowers, treat them properly and you will lengthen the life of your arrangement?

Try to keep your flower container toped up and use floral foam soaked with water containing a flower food.

If the water that your flowers are in or the flower food solution becomes cloudy replace it with fresh fluid, at the same time re cut the flower stems by removing the bottom one to two inches of the stem.

Cut flowers like to be kept in a cool place between 65 to 72 degrees Fahrenheit. 

Try to avoid placing your flowers on top of electrical appliances and other direct heat sources such as direct sunlight and heating, you should also note that overly cold breezes will also adversely effect the life of your cut flowers.

For loose bunches of flowers 

If you can't get your flowers into a flower food solution right away, keep them in a cool place.

Fill a clean, deep vase with water and add flower food.

Remove leaves that will be below the waterline. Leaves in water will promote bacterial growth and turn you flower solution prematurely cloudy.

Re cut the stems underwater this will allow the stems to draw in water instead of air, then place your flowers in the vase solution that you've prepared.

If you purchase loose flowers for your own arrangements you should also consider these tips:

When selecting flowers

Look for flowers with upright, firm petals and buds beginning to open. Yellowish spotted and drooping leaves are signs of age. When using woody stems and branches, cut the flower stems with pruning shears, then place them in warm water containing fresh flower food to promote flower opening.
Your fresh flowers will be made and delivered by a local florist in your area.