North America Native Plant

Swordfern

Botanical name: Nephrolepis ×averyi

USDA symbol: NEAV

Life cycle: perennial

Habit: forb

Native status: Native to the lower 48 states  

Avery’s Swordfern: A Rare Florida Native Fern Worth Knowing About Meet Nephrolepis ×averyi, commonly known as Avery’s swordfern – a fascinating native fern that’s as rare as it is intriguing. This special plant represents one of nature’s unique creations: a hybrid fern that calls Florida home. If you’re a fern ...

Avery’s Swordfern: A Rare Florida Native Fern Worth Knowing About

Meet Nephrolepis ×averyi, commonly known as Avery’s swordfern – a fascinating native fern that’s as rare as it is intriguing. This special plant represents one of nature’s unique creations: a hybrid fern that calls Florida home. If you’re a fern enthusiast or native plant lover, this elusive beauty deserves a spot on your radar, even if you’re unlikely to encounter it in your local nursery.

What Makes This Swordfern Special?

The × in Nephrolepis ×averyi tells us this is a hybrid – meaning it’s the offspring of two different Nephrolepis species that crossed naturally in the wild. This botanical love story has created something truly unique in Florida’s native plant community. As a perennial fern, it returns year after year, adding consistency to whatever wild spaces it calls home.

Where You’ll Find It (Or Won’t!)

Avery’s swordfern is exclusively native to Florida, making it a true Sunshine State endemic. However, don’t expect to spot it on your next nature walk – this hybrid is quite rare and has a very limited distribution within the state. Its scarcity makes it something of a botanical treasure for those lucky enough to encounter it.

The Challenge of Growing Rare Natives

Here’s where things get tricky for eager gardeners. While we’d love to give you detailed growing instructions, Nephrolepis ×averyi is so uncommon that specific cultivation information simply isn’t readily available. This rarity also means that if you ever do have the opportunity to grow this fern, it’s crucial to source it responsibly from reputable native plant dealers who can guarantee their stock wasn’t collected from wild populations.

What We Do Know

As a member of the swordfern family, this plant likely shares some characteristics with its relatives:

  • Typical fern fronds with that classic feathery appearance
  • Preference for humid, shaded environments
  • Ability to add texture and greenery to woodland settings
  • Low-maintenance nature once established

A Word About Ferns and Wildlife

While ferns don’t produce flowers to attract pollinators, they play their own important role in ecosystems. They provide shelter for small creatures, help prevent soil erosion, and contribute to the overall biodiversity that makes Florida’s natural areas so special.

The Bottom Line

Nephrolepis ×averyi represents the kind of botanical treasure that makes native plant enthusiasts’ hearts skip a beat. While you probably won’t be adding this rare beauty to your garden anytime soon, knowing about plants like this helps us appreciate the incredible diversity hiding in Florida’s wild spaces.

If you’re inspired by rare native ferns but want something more accessible for your garden, consider exploring other Florida-native Nephrolepis species or ferns that might be available through native plant sales and specialty nurseries. Every native plant we grow helps support our local ecosystems – even if it’s not the rarest one on the block!

Swordfern

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

Nephrolepis Schott - swordfern

Species

Nephrolepis ×averyi C.E. Nauman [biserrata × exaltata] - swordfern

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