North America Native Plant

Bradley’s Spleenwort

Botanical name: Asplenium bradleyi

USDA symbol: ASBR2

Life cycle: perennial

Habit: forb

Native status: Native to the lower 48 states  

Synonyms: Asplenium ×stotleri Wherry (ASST7)   

Bradley’s Spleenwort: A Rare Native Fern for the Adventurous Gardener If you’re the type of gardener who gets excited about finding hidden gems in the plant world, let me introduce you to Bradley’s spleenwort (Asplenium bradleyi). This little-known native fern might just be the perfect addition to your rock garden ...

Rare plant alert!

Region: New Jersey

Status: S2: Imperiled: Extremely rare due to factor(s) making it especially vulnerable to extinction. Typically 6 to 20 occurrences or few remaining individuals (1,000 to 3,000) ⚘ New Jersey Highlands region ⚘ New Jersey Pinelands region ⚘ Critically Imperiled: Extremely rare due to factor(s) making it especially vulnerable to extinction. Typically 5 or fewer occurrences or very few remaining individuals (<1,000) ⚘ Endangered: In danger of extinction throughout all or a significant portion of its range. ⚘

Region: New Jersey

Bradley’s Spleenwort: A Rare Native Fern for the Adventurous Gardener

If you’re the type of gardener who gets excited about finding hidden gems in the plant world, let me introduce you to Bradley’s spleenwort (Asplenium bradleyi). This little-known native fern might just be the perfect addition to your rock garden – if you can find it responsibly, that is.

What Exactly Is Bradley’s Spleenwort?

Bradley’s spleenwort is a small, perennial fern that’s native to the eastern United States. Unlike its more common cousins that sprawl across forest floors, this particular spleenwort has a thing for tight spaces – think rock crevices and cliff faces. It’s got distinctive triangular fronds that give it a delicate, almost lacy appearance that’s quite charming once you spot it.

You might occasionally see it listed under the synonym Asplenium ×stotleri, but don’t let that confuse you – we’re talking about the same plant.

Where Does It Call Home?

This native beauty has quite an impressive range across the lower 48 states, growing naturally in Alabama, Arkansas, Georgia, Illinois, Indiana, Kentucky, Louisiana, Maryland, Missouri, New Jersey, New York, North Carolina, Ohio, Oklahoma, Pennsylvania, South Carolina, Tennessee, Virginia, and West Virginia. That’s a lot of ground for such a specialized little fern!

The Rarity Reality Check

Here’s where things get serious: Bradley’s spleenwort is considered rare in several states. In Alabama, it holds an S2 status, meaning it’s imperiled. In New Jersey, it’s even more precarious with an S1 rating and full endangered species protection, including special protections in the Pinelands and Highlands regions.

What does this mean for you as a gardener? If you’re interested in growing this fern, you absolutely must source it responsibly from reputable nurseries that propagate their own plants rather than collecting from wild populations.

Why Grow Bradley’s Spleenwort?

Despite its rarity challenges, there are some compelling reasons to consider this fern:

  • Native plant gardening: It’s a true native that supports local ecosystems
  • Unique aesthetic: Those triangular fronds add textural interest to rock gardens
  • Conversation starter: Your gardening friends will be impressed by this unusual specimen
  • Low maintenance: Once established in the right conditions, it’s relatively care-free

Perfect Garden Situations

Bradley’s spleenwort isn’t your typical border plant. It shines in:

  • Rock gardens with acidic soil
  • Crevice gardens between stones
  • Woodland gardens with rocky features
  • Native plant collections
  • Specialized fern gardens

Growing Conditions That Make It Happy

This fern is a bit particular about its living situation, but once you understand its needs, success follows:

  • Light: Partial to full shade (it’s not a sun worshipper)
  • Soil: Well-draining, acidic soil is essential – think rocky or sandy substrates
  • Drainage: Excellent drainage is non-negotiable; soggy feet will kill it
  • Climate: Hardy in USDA zones 4-8

Planting and Care Tips

Getting Bradley’s spleenwort established requires a gentle touch:

  • Site selection: Choose a spot that mimics its natural habitat – rocky crevices or well-draining slopes
  • Soil preparation: Amend heavy soils with coarse sand and small stones to improve drainage
  • Watering: Water regularly during establishment, then reduce to occasional deep watering
  • Fertilization: Skip the fertilizer – this fern prefers lean conditions
  • Patience: Growth is slow but steady; don’t expect instant gratification

Wildlife and Pollinator Considerations

Since Bradley’s spleenwort is a fern, it doesn’t produce flowers and therefore doesn’t directly support pollinators. However, it does contribute to the overall biodiversity of native plant communities and provides habitat structure for small creatures in rock garden ecosystems.

The Bottom Line

Bradley’s spleenwort is definitely a plant for the specialized gardener rather than someone looking for easy, abundant groundcover. Its rarity means you’ll need to be extra responsible about sourcing, and its specific growing requirements mean you’ll need to create the right microhabitat.

But if you’re up for the challenge and can source it responsibly, this native fern offers a unique addition to rock gardens and woodland landscapes. Just remember – with rarity comes responsibility. Make sure any plants you acquire are nursery-propagated, never wild-collected, to help preserve wild populations for future generations.

Bradley’s Spleenwort

Classification

Group

Fern

Kingdom

Plantae - Plants

Subkingdom

Tracheobionta - Vascular plants

Superdivision
Division

Pteridophyta - Ferns

Subdivision
Class

Filicopsida

Subclass
Order

Polypodiales

Family

Aspleniaceae Newman - Spleenwort family

Genus

Asplenium L. - spleenwort

Species

Asplenium bradleyi D.C. Eaton - Bradley's spleenwort

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