North America Native Plant

Bluntlobe Cliff Fern

Botanical name: Woodsia obtusa

USDA symbol: WOOB2

Life cycle: perennial

Habit: forb

Native status: Native to Canada âš˜ Native to the lower 48 states  

Bluntlobe Cliff Fern: A Charming Native for Challenging Spots Looking for a tough little native plant that thrives where others struggle? Meet the bluntlobe cliff fern (Woodsia obtusa), a delightfully resilient North American native that’s perfectly happy growing in rocky crevices, shaded slopes, and other spots where many plants fear ...

Bluntlobe Cliff Fern: A Charming Native for Challenging Spots

Looking for a tough little native plant that thrives where others struggle? Meet the bluntlobe cliff fern (Woodsia obtusa), a delightfully resilient North American native that’s perfectly happy growing in rocky crevices, shaded slopes, and other spots where many plants fear to tread.

What Makes This Fern Special

The bluntlobe cliff fern gets its name from its distinctive fronds, which feature rounded, blunt-tipped lobes that give it a softer appearance than many of its fern cousins. This perennial beauty typically reaches 6-15 inches tall and wide, creating charming tufts of delicate greenery that add texture and movement to the garden.

Don’t let its delicate appearance fool you – this little fern is surprisingly tough. It’s adapted to growing in challenging conditions, making it an excellent choice for those tricky spots in your garden where other plants might struggle.

Where You’ll Find It Growing Wild

This native gem has quite an impressive range! You can find bluntlobe cliff fern growing naturally across much of eastern and central North America, from Ontario and Quebec down through the southeastern United States. It calls home to states including Alabama, Arkansas, Connecticut, Delaware, Florida, Georgia, Illinois, Indiana, Iowa, Kansas, Kentucky, Louisiana, Maine, Maryland, Massachusetts, Michigan, Minnesota, Mississippi, Missouri, Nebraska, New Hampshire, New Jersey, New York, North Carolina, Ohio, Oklahoma, Pennsylvania, Rhode Island, South Carolina, Tennessee, Texas, Vermont, Virginia, West Virginia, and Wisconsin.

Perfect Spots for Your Garden

The bluntlobe cliff fern shines in several garden situations:

  • Rock gardens: Its natural habitat makes it perfect for tucking between stones and boulders
  • Woodland gardens: Creates beautiful ground cover under trees and shrubs
  • Shade gardens: Thrives in those challenging dark corners where many plants struggle
  • Native plant gardens: An authentic choice for naturalistic plantings
  • Erosion control: Helps stabilize slopes with its spreading habit

Growing Conditions That Make It Happy

One of the best things about bluntlobe cliff fern is how adaptable it is. Here’s what it prefers:

  • Light: Partial to full shade (morning sun is fine, but avoid hot afternoon sun)
  • Soil: Well-draining, rocky, or sandy soil – it actually prefers lean conditions over rich, heavy soil
  • Moisture: Moderate moisture levels; drought-tolerant once established but appreciates consistent moisture
  • pH: Adaptable to various pH levels, though slightly alkaline conditions are preferred
  • Hardiness: Thrives in USDA zones 3-8, making it suitable for most temperate climates

Planting and Care Made Simple

Growing bluntlobe cliff fern is refreshingly straightforward:

When to plant: Spring is ideal, giving the fern time to establish before winter.

Planting tips: Choose a spot with good drainage – this fern would rather be a little dry than waterlogged. If your soil is heavy clay, consider amending with some sand or gravel, or plant in a raised area.

Ongoing care: This is where bluntlobe cliff fern really shines – it’s remarkably low-maintenance! Once established, it requires minimal care. A light mulch can help retain moisture, but avoid heavy mulching which can trap too much moisture around the crown.

Watering: Water regularly the first season to help establishment, then back off. Mature plants are quite drought-tolerant.

What About Wildlife?

While ferns don’t produce the showy flowers that attract pollinators, they do provide valuable habitat. The dense fronds offer shelter for small creatures, and some wildlife may browse the young fiddleheads in spring, though this fern isn’t considered a major food source.

Why Choose Bluntlobe Cliff Fern?

This native fern earns its place in the garden through sheer reliability and charm. It’s perfect for gardeners who want to support native ecosystems while enjoying a plant that doesn’t demand constant attention. Its ability to thrive in challenging conditions makes it an excellent problem-solver for difficult sites.

Plus, there’s something deeply satisfying about growing a plant that’s been thriving in your region for thousands of years – it feels like welcoming an old friend into your garden space.

Whether you’re creating a native plant sanctuary, dealing with a challenging shady slope, or simply want to add some delicate texture to your rock garden, the bluntlobe cliff fern offers native beauty with minimal fuss. Sometimes the best plants are the ones that just quietly do their thing, year after year, asking for very little while giving so much in return.

Bluntlobe Cliff Fern

Classification

Group

Fern

Kingdom

Plantae - Plants

Subkingdom

Tracheobionta - Vascular plants

Superdivision
Division

Pteridophyta - Ferns

Subdivision
Class

Filicopsida

Subclass
Order

Polypodiales

Family

Dryopteridaceae Herter - Wood Fern family

Genus

Woodsia R. Br. - cliff fern

Species

Woodsia obtusa (Spreng.) Torr. - bluntlobe cliff fern

Plant data source: USDA, NRCS 2025. The PLANTS Database. https://plants.usda.gov,. 2/25/2025. National Plant Data Team, Greensboro, NC USA