Pacific Waterleaf

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Other Names:
Slender-Stem Waterleaf
Latin Name:
Hydrophyllum tenuipes
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The Pacific Waterleaf (Hydrophyllum tenuipes) is a soft-textured woodland groundcover and one of the region's little-known native vegetables, its broad, soft-hairy leaves spreading by rhizome into lush green carpets in the deepest, moistest shade.4

Edible & Medicinal Uses

Pacific Waterleaf is a genuine spring green. The young leaves and stems are eaten raw in salads or cooked like any potherb, with a mild flavor reminiscent of spinach or young nettle, and the young rhizomes are crisp and watery, a little like a bean sprout. Young growth is best, before the leaves toughen; the young roots are traditionally eaten as well.3, 4

Ornamental Qualities

As foliage it is quietly beautiful — soft, hand-shaped leaves forming a thick, textural groundlayer about a foot tall, topped in mid to late spring by intricate greenish-white to lavender flowers that bumblebees adore. It fills shaded ground beautifully alongside Lady Fern, Spreading Wood Fern, Redwood Sorrel, and Salal.2, 4

Environment & Culture

Ecology: Common in the westside forests and coastal woodlands of the Pacific Northwest, from British Columbia to northern California and west of the Cascades, at low to middle elevations in moist, shaded ground. Its spring flowers are a favorite of bumblebees, and it hosts native leaf-mining insects, weaving itself into the forest-floor food web.2, 4

Culture: Known and used as a food plant by Northwest peoples — the Cowlitz among them eat its roots — Pacific Waterleaf is part of the region's deep tradition of woodland foraging. We offer it with respect for that knowledge and invite support for Indigenous-led restoration through our Charitable Giving page.4

In the Kitchen

Treat it like a wild spinach: wilt the tender young leaves in a hot pan with olive oil and garlic, fold them into a spring soup or frittata, or use them raw to bulk out a foraged salad. The crisp young rhizomes are a fun raw nibble, sprout-like and mild. Young growth is sweetest — older leaves get coarse. (Growing and harvest details are on the Planting Guide tab.)

Attributes

  • Native Range: British Columbia to northern California; west of the Cascades4
  • USDA Zones: ~7–93
  • Light: Partial to full shade4
  • Water: Moist; woodland conditions3
  • Soil: Moist, humus-rich, well-drained3
  • Habit: Herbaceous rhizomatous groundcover, ~12 in4
  • Bloom: Greenish-white to lavender, mid–late spring4
  • Edible: Young leaves, stems (raw/cooked); young rhizomes3

References

  1. USDA PLANTS Database / U.S. Fish & Wildlife Service, Hydrophyllum tenuipes.
  2. Pojar, J. & MacKinnon, A., Plants of the Pacific Northwest Coast, 2014.
  3. Plants For A Future (PFAF) Database, Hydrophyllum tenuipes.
  4. Sparrowhawk Native Plants / Portland Plant List; Moerman, D., Native American Ethnobotany, 1998.

Pot Sizing Guide

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Planting Guide: Pacific Waterleaf (Hydrophyllum tenuipes)

Tip: The answer to "nothing grows there" shade — plant it in deep, moist corners as an edible groundcover and let its rhizomes turn a bare spot into a spring-greens patch.

When Your Plant Arrives

Open the box promptly and lift your plant out gently, holding the pot rather than the stem. Leave it in its biodegradable eco-pot for now — the roots are settled and don’t need disturbing yet. Give it a slow, thorough drink until water runs through the bottom, then set it somewhere bright but sheltered, out of harsh afternoon sun, drying wind, and frost. Let it rest and acclimate there for a few days before planting, so the move from our greenhouse to your garden is a gentle one. If anything doesn’t look right, please contact customer service within 7 days of delivery and we’ll take care of you.

Choosing a Site

Light: Partial to full shade.

Soil: Moist, humus-rich, well-drained woodland soil.

Space: 12–18 in apart to form a colony.

Planting Steps

Plant in fall or spring; set crowns at soil level in compost-enriched ground.

If it came in a biodegradable eco-pot, plant it pot and all — the pot is pressed from composted cow manure, so it melts into the soil and gives the young roots their first feed. No need to remove it.

Mulch with leaf litter and water in.

Watering & Care

Establishment: Keep moist while establishing.

After establishment: Vigorous and largely self-reliant in shade; summer water keeps it lush.

Protection

Wildlife: A bumblebee favorite; nectar for butterflies and bees; hosts native insects.

Companions: Lady fern, wood fern, shade natives.

Harvest Basics

Season: Young leaves and tender stems in spring; young rhizomes when dormant.

Use: Eat young leaves and stems raw in salads or cooked as a mild, spinach-like potherb — best young, as older leaves toughen.