North America Non-native Plant

Phyllanthus Saffordii

Botanical name: Phyllanthus saffordii

USDA symbol: PHSA15

Habit: forb

Native status: Not native but doesn't reproduce and persist in the wild

Phyllanthus saffordii: A Rare Hawaiian Treasure Worth Protecting If you’ve stumbled upon the name Phyllanthus saffordii in your native plant research, you’ve discovered one of Hawaii’s botanical mysteries. This little-known species represents the kind of plant that makes conservation-minded gardeners sit up and take notice—not because it’s easy to grow, ...

Rare plant alert!

Region: United States

Status: Endangered: Status is uncertain but is somewhere between the following rankings: Endangered: In danger of extinction throughout all or a significant portion of its range. ⚘

Phyllanthus saffordii: A Rare Hawaiian Treasure Worth Protecting

If you’ve stumbled upon the name Phyllanthus saffordii in your native plant research, you’ve discovered one of Hawaii’s botanical mysteries. This little-known species represents the kind of plant that makes conservation-minded gardeners sit up and take notice—not because it’s easy to grow, but because it’s critically important to preserve.

What Makes This Plant Special?

Phyllanthus saffordii is a herbaceous forb, meaning it’s a non-woody flowering plant that dies back to ground level. Unlike the shrubs and trees that might dominate your landscape, this plant maintains a softer, more delicate presence in its native habitat. As a member of the diverse Phyllanthus genus, it belongs to a fascinating group of plants known for their unique leaf-like branches and tiny, often inconspicuous flowers.

A Plant in Crisis

Here’s where things get serious: Phyllanthus saffordii carries an Endangered status in the United States. This isn’t just a casual conservation concern—this plant is hanging on by a thread in the wild. When a species reaches endangered status, it means that without immediate protection and careful management, we could lose it forever.

Geographic Distribution and Habitat

While specific distribution data for this species remains limited, its presence in Hawaii and its facultative wetland status tell us something important about where it calls home. Being facultative means this plant is flexible—it can handle both wetland and non-wetland conditions, which actually makes it somewhat adaptable compared to plants that need very specific moisture levels.

Should You Try Growing Phyllanthus saffordii?

This is where responsible gardening gets complicated. While the conservation-minded part of you might want to help preserve this species by growing it, there are some serious considerations:

  • Source responsibly: If you can find this plant at all, make absolutely sure it comes from ethical, permitted sources—never wild-collected material
  • Expertise required: Endangered plants often have very specific needs that aren’t well-documented
  • Legal considerations: There may be restrictions on growing or propagating endangered species
  • Better alternatives: Consider supporting conservation by growing other native Hawaiian plants that aren’t at risk

What We Know About Growing Conditions

Given its facultative wetland status in Hawaii, Phyllanthus saffordii appears to tolerate varying moisture conditions. As a forb, it likely prefers:

  • Well-draining soil that can occasionally hold moisture
  • Protection from harsh winds
  • Partial shade to full sun exposure
  • Tropical to subtropical climate conditions

The Bigger Picture

Sometimes the most important plants aren’t the ones we can easily grow in our gardens—they’re the ones that remind us why native plant conservation matters. Phyllanthus saffordii represents countless species that exist on the edge of extinction, often with little fanfare or public attention.

Instead of trying to grow this rare beauty yourself, consider supporting Hawaiian plant conservation organizations, choosing other native Hawaiian plants for your garden, or simply spreading awareness about the importance of protecting our botanical heritage.

Alternative Native Plants to Consider

If you’re interested in supporting Hawaiian native plants in your garden, look for more readily available species that won’t put additional pressure on wild populations. Your local native plant society can guide you toward appropriate alternatives that share similar growing conditions or ecological roles.

Remember, sometimes the best way to love a plant is to protect it in its natural habitat rather than trying to bring it into our gardens. Phyllanthus saffordii may be small and inconspicuous, but its story is a powerful reminder of what we stand to lose—and what’s worth fighting to save.

Phyllanthus Saffordii

Classification

Group

Dicot

Kingdom

Plantae - Plants

Subkingdom

Tracheobionta - Vascular plants

Superdivision

Spermatophyta - Seed plants

Division

Magnoliophyta - Flowering plants

Subdivision
Class

Magnoliopsida - Dicotyledons

Subclass

Rosidae

Order

Euphorbiales

Family

Euphorbiaceae Juss. - Spurge family

Genus

Phyllanthus L. - leafflower

Species

Phyllanthus saffordii Merr.

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