How to Grow Lichen and Native Groundcovers

Lichen and Native Groundcovers

Various species (Lichen: Division Ascomycota & Basidiomycota; Groundcovers: Multiple families)

groundcover

Lichens are symbiotic organisms combining fungi and algae or cyanobacteria, while native groundcovers are low-growing perennial plants adapted to local ecosystems. Together they create resilient, low-maintenance living carpets that suppress weeds, prevent erosion, and support local wildlife. These are among the most sustainable landscaping options available.

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Example Lichen and Native Groundcovers timeline · Pittsburgh, PA (Zone 6b)

  1. Plant Lichen and Native Groundcovers

    Around Apr 17

    Near Pittsburgh's average last spring frost.

  2. Tend & protect

    Late spring–summer

    Watering, feeding, and pest-watch reminders.

  3. Harvest Lichen and Native Groundcovers

    Late summer into fall

    Before the first fall frost (≈ Nov 8)

Sample dates for Pittsburgh, PA. Sign up to get exact Lichen and Native Groundcovers dates for your own zip code.

Growing Conditions

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Sun: Highly variable by species; many lichens thrive in partial shade to full sun; groundcovers range from shade-tolerant (2-4 hours sun) to full sun (6+ hours)
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Water: Lichens require no watering once established; groundcovers need consistent moisture during establishment (1-2 months), then minimal watering except during drought stress
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Spacing: Lichens: naturally establish; Groundcovers: 6-18 inches apart depending on species and desired coverage speed inches
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Days to maturity: Lichens: extremely slow (1-3 mm growth per year), taking 2-5+ years for visible coverage; Groundcovers: 1-3 years for full coverage
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Planting depth: Lichens: not planted (naturally colonize surfaces); Groundcovers: plant at same depth as container, crown at soil level

Soil

Type: Varied by species; lichens grow on rock, bark, or soil; groundcovers prefer well-draining soil matching local conditions
pH: Lichens: variable (4.0-8.0+); Groundcovers: typically 6.0-7.5 depending on species
Amendments:
Minimal amendments needed for established lichen Native soil microbes and fungi Mulch (2-3 inches) for new groundcover plantings Compost for degraded soils Avoid excessive fertilizer

Growing Zones

Find your zone →

Varies by region; native groundcovers thrive in their native zones; lichens adapt to virtually all zones

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Growth Stages

1

Colonization/Establishment

1-2 years for groundcovers; 2-5+ years for visible lichen coverage

Lichens slowly establish on rock or soil surfaces; groundcover plugs develop root systems and begin vegetative spread

Keep groundcovers consistently moist; avoid foot traffic; do not disturb lichen surfaces; allow 1-2 years for full establishment

2

Vegetative Spread

Ongoing for 2-5+ years until full coverage

Groundcovers expand outward through rhizomes, stolons, or layering; lichens grow incrementally, becoming more visible and covering more area

Minimal watering after establishment; remove competing weeds manually; do not fertilize heavily; maintain loose soil structure

3

Mature Coverage

Indefinite; maintains for decades with minimal care

Groundcovers form dense, continuous carpet; lichens reach visible maturity with distinctive colors and textures

Occasional light raking to remove debris; resist urge to rake/disturb lichen; minimal intervention required; monitor for invasive species

4

Reproduction

Seasonal flowering for groundcovers; continuous for lichen

Groundcovers may flower and produce seed (species-dependent); lichens reproduce via spores and vegetative fragments

Allow flowers to mature; avoid pesticides; protect from disturbance to support lichen reproduction

5

Long-term Maintenance

Indefinite

Established plantings require minimal care; lichens continue slow growth and provide ecological benefits indefinitely

Remove invasive species; avoid heavy foot traffic; do not use herbicides or fungicides; monitor for pests only if problematic

Companion Planting

Plan your garden →

Plant with:

Native spring bulbs (Trillium, Trout lily) Low native shrubs (Bearberry, Wintergreen) Small sedges and grasses Native wildflowers (Creeping phlox, Stonecrop) Moss species Low-growing ferns

Avoid planting near:

Aggressive invasive groundcovers (English ivy, Vinca minor in some regions) Heavy nitrogen-fixing plants that shade lichen Areas receiving heavy foot traffic or frequent disturbance Locations with frequent pesticide application Heavily manicured lawn areas incompatible with natural aesthetic

Common Pests

  • and

    Remove by hand in cool mornings; encourage natural predators; use beer traps in severe cases

  • Hand-pull; use targeted herbicide on cut surfaces; never allow seeding; monitor annually

  • Establish clear pathways; install stepping stones; restrict access to sensitive areas; provide alternative routes

  • Improve drainage if problematic; allow as part of ecosystem; thin only if smothering groundcover

  • Reduce fertilizer input; encourage distance from roadways; plant in areas with low air pollution

Uses

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Pollinator and Habitat Support

Wildlife

Native groundcovers provide nectar and pollen for insects; low-growing varieties create shelter for ground-nesting bees and beneficial arthropods. Lichens provide critical food for elk, reindeer, and invertebrates. [source]

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Erosion Control and Soil Stabilization

Household

Root systems prevent soil erosion on slopes and banks; reduce runoff and improve water infiltration. Lichen and groundcover combination stabilizes fragile slopes without need for erosion matting. [source]

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Air Quality Monitoring and Improvement

Ecological

Lichens serve as bioindicators of air pollution and improve air quality by absorbing airborne particulates. They capture and store nitrogen, enriching poor soils. [source]

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Water Management and Stormwater Reduction

Household

Groundcovers reduce stormwater runoff by 50-70% compared to bare soil and turf; improve groundwater recharge. Reduce cooling costs and urban heat island effect. [source]

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Traditional and Ethnobotanical Uses

Medicinal

Various native groundcovers have traditional medicinal uses (e.g., wintergreen oil for topical pain relief). Lichens produce unique compounds studied for antimicrobial properties; used in traditional dyes. [source]

This is not medical advice. LizPlants is not a medical resource. Always consult a qualified healthcare professional before using plants medicinally.

Harvest Tips

Lichens and groundcovers are not typically harvested; maintain by light raking to remove dead debris (minimal disturbance); prune groundcovers only if encroaching on desired plants; never harvest wild lichen for commercial purposes

Fun Facts

  • 🌱 Lichens are among Earth's oldest living organisms—some colonies are over 4,500 years old, making them older than bristlecone pines. A single lichen grows only about 1 mm per year, yet some cover thousands of acres.
  • 🌱 Lichens are nature's air quality sensors; their absence indicates severe air pollution. Conversely, healthy lichen diversity indicates excellent air quality—they've been used to map pollution zones in industrial cities.
  • 🌱 Native groundcovers can reduce lawn maintenance time by 80% compared to traditional turf, requiring no mowing, minimal fertilizer, and minimal water once established while supporting 5-10x more insect and wildlife species.

Gardening Terms

New to gardening? Learn about terms used in this guide:

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