04/17/2026
I always thought the Venus flytrap, Dionaea muscipula, was a tropical house plant until a recent trip to Wilmington, NC. Native Venus Flytraps are found exclusively within a ~75-mile radius of Wilmington, where they thrive in longleaf pine savannas in the Coastal Plain and Sandhills of North and South Carolina. Soil in these pine savannas is wet, acidic, and poor, lacking essential nutrients such as nitrogen and phosphorus. To obtain these nutrients, the Venus Flytrap has evolved the ability to capture and digest insects. Although named the Venus Flytrap, the plant eats primarily crawling insects and arachnids, only about 5% of the diet is winged insects including flies.
Even though Venus Flytraps are sold as a houseplant, they are best grown outside under conditions that reasonably replicate their natural habitat. The plant is winter hardy in USDA zones 6-10, and requires at least 10 weeks of winter dormancy at 35-50 degrees F. In areas where winter temperatures may dip below 35 degrees F, this dormancy can be achieved by placing the plant in a refrigerator. Growing medium should be an acidic mix that retains water such as a 1:1 mix of peat moss and sand or perlite. It is important to keep the soil almost waterlogged using rainwater (optimal) or distilled/reverse-osmosis water, tap water is too mineral rich and will damage the plant over time. Venus Flytraps require at least 6 hours of direct sunlight, plants receiving sufficient light with have bright red traps.
Loss of habitat is the largest threat to the Venus flytrap. The plants require periodic forest fires to prevent tree and scrub encroachment on the savannas. Poaching is also a major threat to the species. Venus Flytraps are slow-growing, so nurseries collect plants from the wild or buy wild-collected plants wholesale, threatening the wild populations. Venus Flytraps should only be purchased from nurseries that know the origin of their plants. I purchased a plant from a reputable nursery in Wilmington, hopefully it will flourish in my Maryland garden.
Resources:
https://homegrown.extension.ncsu.edu/2022/09/02/the-venus-flytrap-a-north-carolina-native/
https://www.fws.gov/species/venus-fly-trap-dionaea-muscipula
https://cornersofthecountry.com/hiking-north-carolinas-venus-flytrap-trail
https://ncbg.unc.edu/wp-content/uploads/sites/963/2020/02/GrowingCarnivorousPlants.pdf
https://newhanover.ces.ncsu.edu/news/venus-flytrap-dormancy/
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