Flowers on Valentine’s Day are a universally understood romantic gesture, but there’s nothing romantic about sneezing frantically. Mold can grow on flowers as well, since they’re no longer living once they’re cut from the stem. 

“You have flowers that have been cut -- once they get cut they are dead and you keep them wet but they're going to be moldy,” Dr. Ehrlich said. “People give great big bouquets are going to bother people who are allergic to molds. Not so much the pollen, but the molds are a bother.” 

Mold isn’t the only allergen to watch out for come mid-February. Pollen allergies should also be taken into consideration. But that doesn’t mean you have to scrap your plans for a big bouquet! Flowers like peonies and pansies are better for allergy sufferers than others because they don’t have allergenic pollens.