North America Native Plant

Shiny-leaf Yellow Loosestrife

Botanical name: Lysimachia scopulensis

USDA symbol: LYSC2

Life cycle: perennial

Habit: shrub

Native status: Native to Hawaii  

Shiny-Leaf Yellow Loosestrife: A Rare Hawaiian Treasure Worth Protecting If you’ve stumbled across the name shiny-leaf yellow loosestrife in your native plant research, you’ve discovered one of Hawaii’s most precious botanical gems. But before you start planning where to plant it in your garden, there’s something crucial you need to ...

Rare plant alert!

Region: United States

Status: S1: Status is uncertain but is somewhere between the following rankings: 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: United States

Shiny-Leaf Yellow Loosestrife: A Rare Hawaiian Treasure Worth Protecting

If you’ve stumbled across the name shiny-leaf yellow loosestrife in your native plant research, you’ve discovered one of Hawaii’s most precious botanical gems. But before you start planning where to plant it in your garden, there’s something crucial you need to know about this remarkable species.

What Makes This Plant So Special?

Shiny-leaf yellow loosestrife (Lysimachia scopulensis) is a perennial shrub that’s as rare as it is beautiful. This Hawaiian native produces cheerful yellow flowers and boasts glossy green foliage that catches the light just right – hence the shiny-leaf part of its common name. As a member of the primrose family, it shares relatives across the globe, but this particular species calls only the Hawaiian Islands home.

Where Does It Come From?

This plant is endemic to Hawaii, meaning it exists nowhere else on Earth naturally. You’ll find it clinging to life on volcanic cliffs and rocky outcrops throughout the Hawaiian Islands, where it has adapted to some pretty challenging growing conditions over thousands of years.

The Reality Check: Why You Probably Shouldn’t Grow It

Here’s where we need to have a serious conversation. Shiny-leaf yellow loosestrife has a Global Conservation Status of S1, which translates to Critically Imperiled. In plain English? This plant is in serious trouble, with typically five or fewer populations remaining and fewer than 1,000 individual plants in existence. It’s officially listed as Endangered.

Because of its critically endangered status, we strongly recommend against attempting to grow this plant unless you’re:

  • A licensed botanical institution
  • Participating in an official conservation program
  • Working with responsibly sourced, legally obtained material
  • Located in Hawaii with proper permits

Growing Conditions (For Conservation Efforts Only)

If you’re involved in legitimate conservation work, here’s what this finicky plant needs:

  • Climate: USDA hardiness zones 10-11 (tropical conditions only)
  • Soil: Well-draining, rocky volcanic soils
  • Light: Partial shade with protection from intense sun
  • Water: Moderate moisture without waterlogging
  • Special requirements: Extremely specialized growing conditions that are difficult to replicate

What You Can Do Instead

If you’re drawn to native Hawaiian plants or yellow-flowering shrubs for your garden, consider these alternatives:

  • Other native Hawaiian Lysimachia species that aren’t endangered
  • Native yellow-flowering plants appropriate to your region
  • Supporting conservation organizations working to protect Hawaiian endemic species

Supporting Conservation

The best thing most of us can do for shiny-leaf yellow loosestrife is to support its conservation in the wild. Consider donating to Hawaiian botanical conservation programs or native plant societies that work to protect these irreplaceable species.

Sometimes the most loving thing we can do for a plant is to leave it in the hands of the experts who are working tirelessly to bring it back from the brink of extinction. Shiny-leaf yellow loosestrife may be beautiful, but its true beauty lies in its wild Hawaiian home, where conservationists are fighting to ensure future generations can marvel at this remarkable endemic treasure.

Shiny-leaf Yellow Loosestrife

Classification

Group

Dicot

Kingdom

Plantae - Plants

Subkingdom

Tracheobionta - Vascular plants

Superdivision

Spermatophyta - Seed plants

Division

Magnoliophyta - Flowering plants

Subdivision
Class

Magnoliopsida - Dicotyledons

Subclass

Dilleniidae

Order

Primulales

Family

Primulaceae Batsch - Primrose family

Genus

Lysimachia L. - yellow loosestrife

Species

Lysimachia scopulensis Marr - shiny-leaf yellow loosestrife

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