There is a new video on YouTube that shows you how to get the most our of your cut flowers. The video is sponsored by Proflowers.
The flowers in the video are roses, but I think the tips would work well for most cut flowers. Something I did not know is that roses have guard leaves (2-3 tough outer leaves) that you should remove before arranging.
Fill the vase with water and add the plant food. Next, remove any leaves that would touch the water in the vase. Arrange flowers in a spiral formation, from the outside in. After three days you should replace the water and add another packet of plant food.
Maybe I should start leaving tips about Mother's Day and cut flowers now that I know how to care for them?