OPO, Colombia -- Felipe Ospina was waiting patiently for his farm's roses to bud and bloom so they would be shipped to the United States just in time for Valentine's Day. But a crippling frost burned almost 40 percent of his crop this week.

And he was lucky.

Some of the dozens of greenhouses that dot the savannah surrounding the Colombian capital, Bogotá, lost their entire production to unusually low temperatures that dipped to 19 degrees, according to the Colombian Association of Flower Producers.

The association does not have figures yet for how much was lost, but it says about 30 percent of the 13,837 acres planted with flowers northeast of Bogotá was hit.

Colombia supplies about 60 percent of all the roses sold in the United States for Valentine's Day and 77 percent of all fresh-cut flowers through the year.

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