The Twinleaf plant (Jeffersonia diphylla), also known as Jeffersonia, is a perennial herb native to the woodlands of eastern North America. It is a member of the Berberidaceae family known for its distinctively paired leaves, divided into two symmetrical lobes and resembling butterfly wings, giving it the "twinleaf" name.
Twinleaf is hardy in USDA zones 4 to 7. It can tolerate cold winters but not hot, humid conditions. If summer temperatures are too high, it may go dormant.
The plant typically reaches about 12 to 18 inches (30 to 45 cm). In early spring, it produces delicate, white, cup-shaped flowers on slender stalks. Each flower has eight petals and blooms for a short period.
The plant was named Jeffersonia after U.S. President Thomas Jefferson by his friend, the botanist William Bartram.
Growing Twinleaf
Understanding its natural woodland habitat and mimicking those conditions in a garden setting will help it thrive.
Twinleaf thrives in the dappled sunlight or partial shade of deciduous forests. Its ideal location receives morning sun, afternoon shade, or consistent filtered light.
Twinleaf prefers fertile, loamy soil with plenty of organic matter. Adding leaf mold or compost to your garden can help mimic the natural forest floor. Keep soil moist, especially during the growing season (spring and early summer), but don't let it become waterlogged.
Once established, Twinleaf requires relatively low maintenance. Deadhead the flowers to maintain a tidy appearance; otherwise, it doesn't require much pruning.
Beautiful but Fleeting Blooms
Twinleaf is one of the earliest plants to bloom in the woodland garden. It often flowers for a very brief period, typically in March or April. The flowers last for a few days to a week at most. Blooms usually open in the morning and close in the evening. Conditions such as wind or rain can shorten their display.
Its flowers are small and delicate. They are cup-shaped, with eight white petals. Each bloom is about 1 inch (2.5 cm) in diameter, making them reasonably small but striking against the plant's green foliage. The prominent yellow stamens in the flower's center add color.
Where To Plant Twinleaf
Twinleaf is found primarily in the eastern and central United States.
In some parts of its range, Twinleaf is considered rare or threatened. It thrives best in undisturbed woodlands with a rich understory.
If you plan to grow Twinleaf in your garden, areas that mimic these natural habitats—such as shaded woodland gardens with rich, moist, well-drained soil—will provide the best conditions for success.