WootBot


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Spring is turning to summer here in the Northern Hemisphere, and the world is in blossom. Flowers always make me think of Chairman Mao, who once vowed to “let a hundred flowers bloom” in China, meaning that the nation would be healthier if a diversity of ideas could compete for attention. But in real life, sometimes the wrong flowers win the war of ideas, leading us up a primrose path of misconceptions and misinformation. This month, Jeopardy! champ Ken Jennings digs up all kinds of floral falsehoods from the fertile soil of his mind, separating the weeds of legend from the pick-me-up bouquet… of truth.

Flower Myth #3: Stay Away from Flowers If You Have Seasonal Allergies!

Allergies are often at their worst in the springtime, when big, beautiful flowers are conspicuously blooming all over the place. As a result, they were long blamed for causing all the sniffling and the sneezing. Hay fever was even called “rose fever” during the Victorian era and afterward.

In his 2000 book Allergy-Free Gardening, horticulturist Tom Ogren created OPALS, the Ogren Plant Allergy Scale, which ranks plants’ sneeze-causing potential from 1 to 10. (Hollyhocks are a 2, for example, while the dreaded bottlebrush is a solid 9.) Ogren’s results have codified what allergists have been saying for years: the prettier a flower is, the less likely it is to cause hay fever. Flowers with big, brightly colored blooms have evolved that way to attract the birds and bees that pollinate them, and biotically pollinated species tend to have larger, less irritating pollen. What really gets up your nose are the dust-like pollen grains of plants that are “anemophilous”—pollinated by the wind. In other words, non-showy species like trees and grasses are usually the worst hay fever culprits. Ornamental flowers are, contrary to popular belief, the safest of plants.

Of course, there are lots of different kinds of noses out there, and some people are sensitive enough that they have to avoid flowers. But allergist Richard Weber says that’s not typically a pollen issue. “When people do have trouble with flowers, it's usually because they are sensitive to a flower's strong smell. They have nonallergic rhinitis—not an allergy.” You should feel confident that you can hand almost anyone a nice bouquet without providing a follow-up gift of Claritin.

Quick Quiz: What plants in genus Ambrosia—ironically, the mythical “food of the gods”—are the leading cause of hay fever in North America?

Ken Jennings is the author of Brainiac, Ken Jennings's Trivia Almanac, and Maphead. He's also the proud owner of an underwhelming Bag o' Crap. Follow him at ken-jennings.com or on Twitter as @KenJennings.

Photo by Flickr user parislemon. Used under a Creative Commons License.

bacalum


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I presume your question refers to ragweed. However, "hay fever" is a general term, and can be caused by different plants flowering at different times of the year. Although "grasses" are generally cited as the dominant cause of hayfever in N. America, I haven't seen a good study which identifies ragweed as being the #1 culprit.

As for grasses not being showy, you haven't seen enough grasses. Some of the inflorescences are quite beautiful.

I also take issue with the non-allergic rhinitis comment. Many people get severe headaches, nausea, and other symptoms - not just rhinitis - from showy flowers such as Easter lilies and less-impressive flowers such as allyssum.

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labyrinthia


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I have horrible allergies and asthma. I'm allergic to pollen, dust, mold, pet dander, etc. I take two antihistamines, a double dose of steroid nasal spray, one of the strongest inhalers on the market, etc. I've had anaphylactic reactions to airborne allergies, which is not suppose to happen. And flowers have never bothered me. I've had people freak out about giving me flowers, lol, but I've only seen that reaction on TV.

agingdragqueen


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Boyfriend says he's allergic to flowers and we can't have them in the house... learned from Ken Jennings it's actually because he does not love me.


inkycatz


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agingdragqueen wrote:Boyfriend says he's allergic to flowers and we can't have them in the house... learned from Ken Jennings it's actually because he does not love me.



You can always get glass flowers. Pretty and artsy!

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Gatzby


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agingdragqueen wrote:Boyfriend says he's allergic to flowers and we can't have them in the house... learned from Ken Jennings it's actually because he does not love me.



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whoiskenjennings


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agingdragqueen wrote:Boyfriend says he's allergic to flowers and we can't have them in the house... learned from Ken Jennings it's actually because he does not love me.



Someday you'll see that you were better off finding out this way.