Flowers will be a popular gift for this weekend's Mother's Day holiday.
While not as big as Christmas and Valentine's Day, florists will do about 25% of their annual business leading up to Sunday.
Since most blooms come from outside the United States, often Central and South America, customs inspectors are busy trying to catch any uninvited pests or diseases that may hitch a ride with the imported products.
They say missing one can have troubling effects.
"We're looking for pests that have not been established in the United States, that could destroy our plants and crops," says U.S. Customs and Border Protection inspector Hope Reeves.
Customs inspectors say, if you should find flowers with any live bugs, it is best to destroy them to limit the possibility they might spread.