North America Non-native Plant

Plumegrass

Botanical name: Dichelachne micrantha

USDA symbol: DIMI9

Life cycle: perennial

Habit: grass

Native status: Non-native, reproduces and persists in the wild in Hawaii  

Synonyms: Dichelachne sciurea (R. Br.) Hook. f. (DISC9)   

Plumegrass: An Uncommon Grass with Limited Garden Presence If you’ve stumbled across the name plumegrass in your gardening research, you might be wondering what exactly this grass is all about. Plumegrass (Dichelachne micrantha) is one of those plants that exists more in botanical literature than in actual gardens, and there’s ...

Plumegrass: An Uncommon Grass with Limited Garden Presence

If you’ve stumbled across the name plumegrass in your gardening research, you might be wondering what exactly this grass is all about. Plumegrass (Dichelachne micrantha) is one of those plants that exists more in botanical literature than in actual gardens, and there’s a good reason for that.

What Is Plumegrass?

Plumegrass is a perennial grass that belongs to the large Poaceae family, which includes all true grasses. Originally from Australia and New Zealand, this grass somehow made its way to Hawaii, where it has established itself as a naturalized species. You might also see it referenced by its botanical synonym, Dichelachne sciurea, in older plant references.

Where You’ll Find It

In the United States, plumegrass is currently documented only in Hawaii, where it grows as an introduced species that reproduces on its own in the wild. This limited distribution tells us quite a bit about why you won’t find it at your local garden center.

The Garden Reality Check

Here’s where things get interesting (or perhaps disappointing, depending on your perspective): plumegrass isn’t really a garden plant. Despite having plume in its common name, which sounds rather ornamental, this grass has virtually no presence in cultivation. There’s precious little information available about its appearance, growing requirements, or garden performance.

Why This Matters for Your Garden

As a non-native species with unknown invasive potential, plumegrass falls into that gray area where we simply don’t know enough to make confident recommendations. While it’s not currently listed as invasive or noxious, its limited distribution and lack of cultivation history suggest it’s not the best choice for home gardens.

Better Alternatives

If you’re looking for ornamental grasses with feathery, plume-like seed heads, consider these better-documented and more readily available options:

  • Native bunch grasses specific to your region
  • Fountain grass varieties (where appropriate for your climate)
  • Native sedges with interesting seed heads
  • Regional prairie grasses with ornamental value

The Bottom Line

Sometimes in gardening, the most interesting plants are the ones that remain mysteries. Plumegrass appears to be one of those species that’s perfectly content existing in its naturalized Hawaiian habitat without bothering to charm gardeners elsewhere. While there’s nothing inherently wrong with obscure plants, your garden (and your sanity) will likely benefit more from choosing grasses with proven garden performance and readily available growing information.

If you’re drawn to unusual grasses, focus your energy on discovering native species in your area that might be underused in gardens. These local treasures often provide better wildlife benefits and are more likely to thrive with less fuss than mysterious introductions from distant lands.

Plumegrass

Classification

Group

Monocot

Kingdom

Plantae - Plants

Subkingdom

Tracheobionta - Vascular plants

Superdivision

Spermatophyta - Seed plants

Division

Magnoliophyta - Flowering plants

Subdivision
Class

Liliopsida - Monocotyledons

Subclass

Commelinidae

Order

Cyperales

Family

Poaceae Barnhart - Grass family

Genus

Dichelachne Endl. - plumegrass

Species

Dichelachne micrantha (Cav.) Domin - plumegrass

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