Bupleurum longicaule, commonly known as Long-Stem Thorowax, is a deciduous perennial herb native to alpine meadows and slopes of the Himalayas and southwestern China. It typically grows to a height of 2 feet (0.6 meters) and a width of 2-3 feet (0.6-0.9 meters). The plant features an upright form with compound umbels of small, star-shaped yellow flowers, often with a purplish tinge, that bloom in the summer and fall. The foliage is bluish-green, adding to its ornamental value. Long-Stem Thorowax is not particularly showy, but its unique flower structure can add an interesting texture to garden compositions.

Long-Stem Thorowax is valued for its adaptability and ease of maintenance in garden settings. It is often used in herbaceous borders, rock gardens, and as part of naturalistic plantings. This plant prefers full sun exposure and requires medium amounts of water, thriving in well-drained soils. It is not known for having significant disease or pest issues, making it a relatively trouble-free addition to the garden. However, gardeners should be aware that it may require staking in windy locations due to its long stems.CC BY-SA 4.0