perennial

Lewis's Heartleaf

Asarum lewisii 'Flossie'

The Story

Plant Bio

Asarum lewisii, also known as Hexastylis lewisii or Lewis's Heartleaf, is a low-growing, evergreen perennial. It forms a dense groundcover of glossy, heart-shaped green leaves. In spring, it produces inconspicuous, bell-shaped, purplish-brown flowers at ground level.

'Flossie' is a distinct cultivar selected for its striking foliage. The glossy, dark green, heart-shaped leaves are highlighted by a dramatic pewter or silver overlay pattern.

Uses & Benefits:

Ornamental UsesProvides lush, fragrant groundcover with attractive foliage, ideal for shaded areas.
Practical UsesHelps suppress weeds and soil erosion in woodland gardens.
Ecological BenefitsSupports native pollinators and enriches shaded woodland ecosystems.

Essentials

At a Glance

Plant Type

Perennial

Height

4 inches

Width

12 inches

Light

Partial Sun, Shade

Zones

6, 7, 8

Water

Moist

Humidity

High

Lifespan

Perennial

Native To

Southeastern United States

Toxicity

Contains aristolochic acid; toxic if ingested.

Bloom period

Early spring – Late spring

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In flower about 3 months of the year

Planting

How to Grow

  1. Tuck seeds or divisions into shady, moist soil
  2. Mist cuttings regularly to maintain humidity
  3. Ensure soil remains consistently moist for best growth
  4. Mulch lightly to retain soil moisture
  5. Transplant in early spring or fall for best establishment
  6. Avoid direct sunlight to prevent leaf scorch

Pro Tip

Keep soil moist and shaded for optimal growth and vibrant foliage.

Keep It Thriving

Care Guide

Do

  • Water regularly to keep soil moist 🌱
  • Mulch to retain moisture and suppress weeds
  • Prune dead or damaged leaves in early spring

Don't

  • Avoid drought stress by watering during dry spells ❌
  • Don’t expose to direct, harsh sunlight
  • Refrain from over-fertilizing to prevent leaf burn

Seasonal Care Calendar

TaskJanFebMarAprMayJunJulAugSepOctNovDec
Divide
Fertilize
Mulch
Plant
Spring Cleanup

Watch Out For

Pests & Diseases

Common Pests

Common Diseases

In the Garden

Landscape Uses & Companions

Landscape Uses

Shady woodland borderGroundcover beneath treesFragrant shaded garden bed

Companion Plants

Ferns Hostas Astilbes Trilliums

Multiply

Propagation Methods

Good to Know

Common Questions

Lewis's Heartleaf questions

What zones can Lewis's Heartleaf grow in?

Lewis's Heartleaf is hardy in USDA Zones 6–8. Inside that range it survives winter in the ground; outside it, grow it as an annual or a container plant you protect.

Is Lewis's Heartleaf deer resistant?

Yes — Lewis's Heartleaf is rated deer-resistant. Deer typically pass it over, though extreme hunger can override any plant's defenses.

When does Lewis's Heartleaf bloom?

Lewis's Heartleaf typically blooms in early spring through late spring. Exact timing shifts a week or two with your zone — Sow's bloom calendar maps it to your garden.

Does Lewis's Heartleaf need full sun?

Lewis's Heartleaf does best in part shade.

Keep exploring

Grow Lewis's Heartleaf with confidence

See it in a design of your actual yard, get zone-matched care reminders, and track it season by season in your garden journal.