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Flowers and Valentine’s Day are a cherished tradition, whether you’re sending a dozen roses, an elaborate flower arrangement, or hand-delivering a bouquet of daisies. And, as if you needed additional reasons to send flowers this Valentine’s Day, new research shows that the mere presence of flowers can change people’s moods for the better.

A behavioral study conducted at Harvard University shows people feel more compassionate toward others, have less worry and anxiety and feel less depressed when flowers are present in their home. “Other research has proven that flowers make people happy when they receive them,” says Nancy Etcoff, Ph.D., who conducted the study.

“What we didn’t know is that spending a few days with flowers in the home can affect a wide variety of feelings.”

To help those good feelings last as long as possible, check out the Flower Doctor’s hotline sponsored by The Flower Promotion Organization at (888) FLOWRMD (356-9763) for tips on keeping cut flowers looking their best. Throughout the month of February, the hotline plays recorded tips by horticulturist Dr. Bridget Behe, a professor of horticulture at Michigan State University, on the care and handling of cut flowers.

The hotline will be live from 8 a.m. to 8 p.m. CST on Feb. 14 and 15, with cut flower experts on hand to answer questions. Dr. Behe also answers e-mail questions from flower lovers through www.flowrmd.com and www.flowerpossibilities.com year-round.

Here are some pointers for your Valentine’s Day blooms:

Q. How do I keep my fresh cut flowers alive as long as possible?

A. Re-cut the stems – about one additional inch – with floral clippers or sharp knife. Dissolve commercial flower preservative in warm water and immediately place the flowers in the solution. Keep them out of direct sunlight and away from drafts.

Q. When re-cutting, is it better to cut in warm or cold water?

A. Warm water is best.

Q. Which cut flower lasts longest?

A. Flower life is a function of genetics and environment. Generally, though, chrysanthemums and carnations last the longest.

Q. Does removing leaves harm the flowers?

A. No. In fact, removing leaves that will be under water will help reduce bacteria and fungi growth that can harm the stems and shorten your enjoyment period.

Q. Is a vinegar and water solution better than floral food?

A. No. Nothing extends the life of a cut bloom as well as a measured amount of commercial floral preservative dissolved in warm water.