Old meaning, new boost for Feb. 14

The headlines read Valentine flowers boost US economy

Wilting flowers

When researchers at Bar-Ilan University in Israel put cut flowers in a weak solution of Viagra — one-fiftieth the amount taken by men for impotence — the flowers survived for two weeks instead of one. They suspect the Viagra works through its effects on nitric oxide, which is also how the drug treats erectile dysfunction.

Actually, off-label uses can be productive.