Drosera filiformis

Drosera filiformis: Threadleaf Sundew

Drosera filiformis, also known as Threadleaf Sundew, is a captivating carnivorous plant closely related to Drosera tracyi. While both species were previously grouped under the name Drosera filiformis, they have since been recognized as separate entities.

Drosera filiformis shares similar care requirements and fascinating characteristics with its relative. Thriving in full sun, Drosera filiformis flourishes when placed outdoors, ideally in a dish filled with approximately 2 inches of rainwater, distilled water, or reverse osmosis water. Alternatively, it can be displayed in a hanging planter, offering a visually pleasing arrangement. However, it is crucial to ensure the plant remains consistently moist by providing ample water at all times. I suggest having it hooked to a drip irrigation system.

With tentacles that can reach up to 18 inches in length, Drosera filiformis has the remarkable ability to spread and grow into gargantuan sizes when provided with sufficient space in a large pot. It becomes an irresistible magnet for gnats, mosquitoes, and biting flies, including yellow flies. By incorporating this plant into your chemical-free landscape, you can effectively address bug problems while adding an aesthetically appealing touch. Tentacles are covered in red hairs.

Drosera filiformis is naturally found along the Atlantic coast, spanning from North Carolina to Nova Scotia, with some populations also existing in the Florida panhandle. The Florida plants typically exhibit smaller sizes and redder colors, leading to their designation as Drosera filiformis var. floridana. The Atlantic coast variant of Drosera filiformis requires a distinct winter season to thrive in the long term. If you reside within their natural range of USDA zones 6 and 7, it is recommended to grow them outside year-round. However, if you live in colder regions, it is advisable to move the plants into a protected area after they have gone dormant, ensuring they are safeguarded from late spring frosts. In zones 8 and 9, the plants should generally thrive but may go dormant prematurely. For those residing in zones 9 or warmer, growing the Drosera filiformis var. floridana form outside is feasible. It is important to note that while certain selected clones of Drosera filiformis var. floridana can survive outside in zone 7, most will not survive over winter in zone 8.This particular specimen of Drosera filiformis originates from New Jersey, making it slightly more cold-hardy than others.