If you've ever traveled down south to Georgia, Florida or South Carolina, you may have noticed a trend of light blue painted porch ceilings. While it's a stunning design choice that can make an outdoor space feel more open and airy, it also carries practical and historical significance.
According to southern traditions, "haint blue" is said to repel bugs (and supernatural spirits) from your home when added to your porch ceiling. To investigate this claim further, we tapped Dr. Michael Reiskind, Entomology Professor and Director of Graduate Programs at North Carolina State University, for his expert insights on the theory.
What is haint blue?
The color haint blue got its name from Gullah traditions. The Gullah Geechee are a group of people descended from enslaved Africans who were brought to the Deep South. The group coined the term "haint" to describe ghostly or evil spirits.
They believe light blue-green hues, dubbed "haint blue," help protect homes from unwanted spirits. Through this ghost-dispelling practice, the paint color also became associated with the deterrence of bugs.
While no single shade is hailed as the pinnacle of "haint blue," many paint colors from various brands fit the bill. The key is to look for a light blue that isn't neon.
Why do people paint their porch ceilings haint blue?
According to Gullah tradition, the color is said to prevent insects and ghosts from stopping by your home because they confuse the color with the sky or water — both of which are things to pass through, not take up residence.
Because of this theory, many people, Gullah and beyond, paint their porch ceilings haint blue as a deterrent for bugs and spirits. The light blue hue also has a way of giving a home's outdoor space a brighter, more open feel.
Does haint blue repel bugs?
"I doubt any colors are very repellent to insects, except in very specific situations," says Dr. Reiskind. "What is more common is that there are colors that are attractive to particular insects, including some shades of blue for flies, but color repellency is not well-supported. Most studies that people interpret as showing color repellence are actually only relative, such that colors are not necessarily 'repellent' just not as attractive as the alternatives."
"Visual repellence to a specific color is likely quite rare. [Although], the attractiveness of a certain color might be due to a resource the insect needs. For example, the tsetse, a biting fly in Africa, is attracted to electric blue and black colors, which we think is a 'super stimulus' mimicking the colors of large mammals, like elephants, antelopes, etc."
Bug Repellent Alternatives
If you're looking for a bug repellent to get the job done and aren't sold on the effectiveness of a haint blue painted porch ceiling, here are a few tested and reviewed product options that our Good Housekeeping Institute recommends instead.
Kate (she/her) is the associate editor of The Pioneer Woman Magazine. She writes features, commerce, and travel content. Kate brings nearly five years of home, food, and lifestyle experience to the role, including time as editorial assistant at Good Housekeeping. Her bylines have appeared in Woman’s Day, Food Network Magazine, Better Homes & Gardens, Modern Farmhouse Style, Dream Kitchens & Baths, and more. When she’s not writing, Kate can be found lazing in the park with a sudoku in hand.
