North America Native Plant

North Fork Heartleaf

Botanical name: Hexastylis rhombiformis

USDA symbol: HERH

Life cycle: perennial

Habit: forb

Native status: Native to the lower 48 states  

North Fork Heartleaf: A Rare Woodland Gem Worth Protecting If you’re looking for a unique native groundcover that’s truly special, let me introduce you to the North Fork heartleaf (Hexastylis rhombiformis). This little woodland wonder is one of those plants that makes you feel like you’ve discovered a hidden treasure ...

Rare plant alert!

Region: Conservation status by state

Status: S3: Status is uncertain but is somewhere between the following rankings: Vulnerable: Either very rare and local throughout its range, found only in a restricted range (even if abundant at some locations), or factors are making it vulnerable to extinction. Typically 21 to 100 occurrences or between 3,000 and 10,000 individuals ⚘

North Fork Heartleaf: A Rare Woodland Gem Worth Protecting

If you’re looking for a unique native groundcover that’s truly special, let me introduce you to the North Fork heartleaf (Hexastylis rhombiformis). This little woodland wonder is one of those plants that makes you feel like you’ve discovered a hidden treasure – and in many ways, you have!

What Makes North Fork Heartleaf Special?

North Fork heartleaf is a perennial forb that belongs to a fascinating group of plants known for their heart-shaped leaves and curious flowers. What sets this particular species apart is right there in its scientific name – those distinctive rhombic (diamond-shaped) patterns on its leaves that catch your eye even in the shadiest corners of the woodland.

As a low-growing groundcover, this plant forms attractive mats of glossy, evergreen foliage that stays beautiful year-round. The leaves are the real showstoppers here, with their unique geometric patterns creating natural artwork right in your garden.

Where Does It Call Home?

This southeastern native has a very limited range, growing naturally only in North Carolina and South Carolina. It’s what we call an endemic species – meaning it’s found nowhere else in the world naturally. Pretty cool, right?

A Word of Caution: Rarity Matters

Here’s where things get important: North Fork heartleaf has a Global Conservation Status of S3, which means it’s considered vulnerable. With only an estimated 21 to 100 populations or between 3,000 and 10,000 individuals remaining in the wild, this plant needs our protection.

Does this mean you shouldn’t grow it? Not at all! But it does mean you need to be extra careful about where you source your plants. Always purchase from reputable native plant nurseries that propagate their own stock rather than collecting from wild populations.

Perfect Growing Conditions

If you’re lucky enough to live in USDA hardiness zones 7-9 and have the right conditions, North Fork heartleaf can be a wonderful addition to your garden. Here’s what this woodland beauty craves:

  • Shade to partial shade (think dappled sunlight through tree canopy)
  • Moist, well-draining soil rich in organic matter
  • Consistent moisture without being waterlogged
  • Protection from harsh winds and direct afternoon sun

Garden Design Ideas

North Fork heartleaf shines in woodland gardens and native shade gardens. It makes an excellent groundcover under trees and shrubs, where its evergreen foliage provides year-round interest. Pair it with other southeastern natives like wild ginger, trilliums, and native ferns for a authentic woodland feel.

This plant is perfect for gardeners who appreciate subtle beauty and want to support native ecosystems. While it may not have the flashy flowers of some garden favorites, its unique foliage and conservation importance make it a meaningful choice.

Planting and Care Tips

The good news is that once established, North Fork heartleaf is relatively low-maintenance:

  • Plant in spring when soil temperatures have warmed
  • Dig in plenty of compost or leaf mold before planting
  • Keep soil consistently moist, especially during the first growing season
  • Apply a 2-3 inch layer of organic mulch to retain moisture and suppress weeds
  • Be patient – like many native woodland plants, it may take time to establish

Supporting Pollinators and Wildlife

While North Fork heartleaf may seem unassuming, it plays an important ecological role. Its unusual flowers, which appear close to the ground, attract specialized pollinators like small flies and gnats. By growing this plant, you’re supporting these often-overlooked pollinators that are crucial parts of our ecosystem.

The Bottom Line

North Fork heartleaf is a plant for gardeners who understand that sometimes the most valuable treasures are the quiet ones. If you have the right growing conditions and can source plants responsibly, this rare native offers the chance to be a conservation hero right in your own backyard.

Just remember – with great plants comes great responsibility. By choosing responsibly propagated North Fork heartleaf, you’re not just adding beauty to your garden; you’re helping ensure that future generations will be able to enjoy this special southeastern native too.

North Fork Heartleaf

Classification

Group

Dicot

Kingdom

Plantae - Plants

Subkingdom

Tracheobionta - Vascular plants

Superdivision

Spermatophyta - Seed plants

Division

Magnoliophyta - Flowering plants

Subdivision
Class

Magnoliopsida - Dicotyledons

Subclass

Magnoliidae

Order

Aristolochiales

Family

Aristolochiaceae Juss. - Birthwort family

Genus

Hexastylis Raf. - heartleaf

Species

Hexastylis rhombiformis Gaddy - North Fork heartleaf

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