North America Native Plant

Graceful Necklace Fern

Botanical name: Lindsaea ensifolia

USDA symbol: LIEN

Life cycle: perennial

Habit: forb

Native status: Non-native, reproduces and persists in the wild in Hawaii âš˜ Native to Pacific Basin excluding Hawaii  

Graceful Necklace Fern: A Delicate Beauty for Tropical Gardens Meet the graceful necklace fern (Lindsaea ensifolia), a charming little fern that’s making its mark in Hawaiian gardens. While this delicate species might not be a household name, it’s worth getting to know if you’re looking to add some fine-textured greenery ...

Graceful Necklace Fern: A Delicate Beauty for Tropical Gardens

Meet the graceful necklace fern (Lindsaea ensifolia), a charming little fern that’s making its mark in Hawaiian gardens. While this delicate species might not be a household name, it’s worth getting to know if you’re looking to add some fine-textured greenery to your shaded garden spaces.

What Exactly Is Graceful Necklace Fern?

The graceful necklace fern is a perennial fern species that belongs to the group of plants we call forbs – essentially, it’s a non-woody plant that comes back year after year. Unlike the towering tree ferns you might picture, this little guy stays relatively compact and creates a delicate, almost lace-like appearance in the garden.

As a true fern, Lindsaea ensifolia reproduces via spores rather than seeds, and it won’t produce any flowers (so don’t expect any pollinator parties around this plant). What it lacks in blooms, though, it makes up for in its graceful, narrow fronds that give it that necklace quality referenced in its common name.

Where Does It Come From?

Here’s where things get interesting: the graceful necklace fern is actually a world traveler. Originally native to various Pacific Basin regions (but not Hawaii), it has established itself in Hawaii, Guam, and Palau. In Hawaii, it’s considered a non-native species that has naturalized – meaning it arrived from somewhere else but now reproduces on its own in the wild.

Should You Plant It in Your Garden?

Since this fern isn’t listed as invasive or noxious, you won’t be causing any ecological disasters by adding it to your garden. However, as responsible gardeners, it’s always worth considering native alternatives first. If you’re in Hawaii, you might want to explore native Hawaiian ferns before settling on this non-native option.

That said, if you do choose to grow graceful necklace fern, here’s what you need to know:

Growing Conditions and Care

This fern has some specific preferences that you’ll want to keep in mind:

  • Light: Partial to full shade – direct sunlight is not this fern’s friend
  • Water: Consistently moist soil, but not waterlogged
  • Humidity: Loves high humidity (perfect for those tropical climates)
  • Soil: Well-draining soil enriched with organic matter
  • Climate: Only suitable for USDA zones 10-12

According to its wetland status classification, this fern usually prefers non-wetland conditions but can tolerate some moisture, making it quite adaptable to different garden situations.

Garden Design Ideas

The graceful necklace fern works beautifully as:

  • Understory planting in woodland or tropical shade gardens
  • Ground cover in shaded rock gardens
  • Accent plant in terrariums or container gardens
  • Fine-textured contrast to broader-leafed shade plants

A Few Things to Keep in Mind

While we don’t have specific information about this fern’s wildlife benefits, most ferns provide some habitat value for small creatures and insects. The delicate fronds can offer shelter for tiny garden visitors, even if they don’t provide nectar or seeds.

If you’re gardening in Hawaii and want to support local ecosystems, consider researching native Hawaiian ferns that might provide similar aesthetic appeal while supporting local wildlife. Native plants are always the gold standard for ecological gardening!

Remember, successful gardening is about finding the right plant for the right place. If you have a shady, humid spot that needs some delicate texture, and you’re gardening in a tropical zone, the graceful necklace fern might just be the perfect fit for your garden puzzle.

Wetland Status

The rule of seasoned gardeners and landscapers is to choose the "right plant for the right place" matching plants to their ideal growing conditions, so they'll thrive with less work and fewer inputs. But the simplicity of this catchphrase conceals how tricky plant selection is. While tags list watering requirements, there's more to the story.

Knowing a plant's wetland status can simplify the process by revealing the interaction between plants, water, and soil. Surprisingly, many popular landscape plants are wetland species! And what may be a wetland plant in one area, in another it might thrive in drier conditions. Also, it helps you make smarter gardening choices and grow healthy plants with less care and feeding, saving you time, frustration, and money while producing an attractive garden with greater ecological benefits.

Regions
Status
Moisture Conditions

Hawaii

FACU

Facultative Upland - Plants with this status usually occurs in non-wetlands but may occur in wetlands

Graceful Necklace Fern

Classification

Group

Fern

Kingdom

Plantae - Plants

Subkingdom

Tracheobionta - Vascular plants

Superdivision
Division

Pteridophyta - Ferns

Subdivision
Class

Filicopsida

Subclass
Order

Polypodiales

Family

Dennstaedtiaceae Lotsy - Bracken Fern family

Genus

Lindsaea Dryand. ex Sm. - necklace fern

Species

Lindsaea ensifolia Sw. - graceful necklace fern

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