Non-native Plants

Dichanthium Caricosum

Dichanthium caricosum

USDA symbol: DICA35

Meet Dichanthium caricosum, a grass species that’s something of an enigma in the plant world. While its botanical name might be a mouthful, this member of the grass family (Poaceae) represents one of those plants that reminds us how much we still have to learn about the natural world around ...

Dichanthium caricosum: The Mysterious Grass Worth Knowing About

Meet Dichanthium caricosum, a grass species that’s something of an enigma in the plant world. While its botanical name might be a mouthful, this member of the grass family (Poaceae) represents one of those plants that reminds us how much we still have to learn about the natural world around us.

What We Know About This Grass

Dichanthium caricosum belongs to the diverse world of graminoids – that’s botanist-speak for grass and grass-like plants. This group includes not just your typical lawn grasses, but also sedges, rushes, and other grass-like species that form the backbone of many ecosystems.

One interesting tidbit we do know is that in Hawaii, this species has a facultative wetland status. What does that mean for gardeners? It’s basically nature’s way of saying this grass is adaptable – it can handle both wet and dry conditions, making it potentially versatile in different landscape settings.

The Geographic Mystery

Here’s where things get interesting (and a bit frustrating for plant enthusiasts): the specific native range and distribution of Dichanthium caricosum isn’t well-documented in readily available sources. This gaps in our knowledge highlight how many plant species, especially grasses, remain understudied despite their ecological importance.

Should You Grow It?

Given the limited information available about this specific species, we’d recommend proceeding with caution. Here’s what to consider:

  • Research first: Check with your local extension office or native plant society about this species in your area
  • Know your local regulations: Some grass species can become problematic in certain regions
  • Consider alternatives: If you’re looking for native grasses, explore well-documented native species in your area first

Growing Conditions (What We Can Guess)

Based on its facultative wetland status and genus characteristics, Dichanthium caricosum likely prefers:

  • Warm climates (tropical to subtropical zones)
  • Flexible moisture conditions – can handle both wet and moderately dry soils
  • Full sun to partial shade
  • Well-draining to occasionally wet soils

The Bigger Picture

While we can’t give you a complete growing guide for Dichanthium caricosum, its story illustrates something important: there are still countless plant species that need more research and documentation. If you’re passionate about native plants and grasses, consider connecting with botanical researchers or citizen science projects that help fill these knowledge gaps.

Our Recommendation

Until more is known about Dichanthium caricosum’s specific characteristics, growth requirements, and ecological impacts, we suggest focusing on well-documented native grass species for your landscape projects. Your local native plant society can recommend grasses that will thrive in your area while supporting local wildlife and ecosystems.

Sometimes the most responsible approach to gardening is knowing when to wait for more information – and Dichanthium caricosum might be one of those cases where patience is the best policy.

Wetland Status

The rule of seasoned gardeners and landscapers is to choose the "right plant for the right place" — matching plants to their ideal growing conditions, so they'll thrive with less care and fewer inputs. But the simplicity of this catchphrase conceals how tricky plant selection can be if you don't have the right information. While tags on nursery plants list watering requirements, there's more to the story.

Knowing a plant's wetland status can simplify the process by revealing the interaction between plants, water, and soil. You might be surprised to learn that popular landscape plants are wetland species! And what may be a wetland plant in one area, in another it might thrive in drier conditions. The table below gives insight into the preferred growing conditions of this plant throughout its geographical distribution.

Region
Preferred Habitat

Hawaii ()

Facultative
Wetland Glossary
Obligate Wetland
Facultative Wetland
Facultative
Facultative Upland
Obligate Upland
Almost always occurs in wetlands
Usually occurs in wetlands but may occur in non-wetlands
Can occur in wetlands and non-wetlands
Usually occurs in non-wetlands but may occur in wetlands
Almost never occurs in wetlands

Classification

Group: Monocot
Kingdom: Plantae - Plants
Subkingdom: Tracheobionta - Vascular plants
Superdivision: Spermatophyta - Seed plants
Division: Magnoliophyta - Flowering plants
Class: Liliopsida - Monocotyledons
Subclass: Commelinidae
Order: Cyperales
Family: Poaceae Barnhart - Grass family
Genus: Dichanthium Willem. - bluestem

Species: Dichanthium caricosum (L.) A. Camus [excluded]

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