Hydrophyllum tenuipes, commonly known as Pacific waterleaf, is an herbaceous perennial native to the moist, deciduous, and mixed forests of western North America, ranging from British Columbia to northern California. It typically forms extensive colonies by spreading rhizomes, thriving in the understory at low to mid elevations. Pacific waterleaf reaches a height of 12 to 18 inches (30 to 45 centimeters) and displays a mounding habit. Its foliage is deeply lobed and can be quite ornamental. The plant produces clusters of greenish-white to lavender flowers, each with protruding stamens that extend beyond the petals, blooming from mid to late spring. The flowers are modestly showy and attract pollinators.

Pacific waterleaf is appreciated for its attractive foliage and ability to fill in shady areas quickly, making it a suitable choice for woodland gardens, shade gardens, and naturalized areas. It is also used for erosion control on slopes. This plant prefers moist, well-drained soils rich in organic matter and thrives in part to full shade. While it is low-maintenance, it can spread aggressively, so gardeners should consider controlling its growth in smaller spaces. There are no significant disease or pest issues, but it can become invasive if not managed properly.CC BY-SA 4.0