North America Native Plant

Brook Crowngrass

Botanical name: Paspalum acuminatum

USDA symbol: PAAC4

Life cycle: perennial

Habit: grass

Native status: Native to the lower 48 states  

Brook Crowngrass: A Native Wetland Wonder for Your Water-Loving Garden If you’re dreaming of a lush, low-maintenance wetland garden or struggling with a perpetually soggy spot in your yard, let me introduce you to brook crowngrass (Paspalum acuminatum). This charming native grass might just be the perfect solution you’ve been ...

Brook Crowngrass: A Native Wetland Wonder for Your Water-Loving Garden

If you’re dreaming of a lush, low-maintenance wetland garden or struggling with a perpetually soggy spot in your yard, let me introduce you to brook crowngrass (Paspalum acuminatum). This charming native grass might just be the perfect solution you’ve been searching for!

What Makes Brook Crowngrass Special?

Brook crowngrass is a perennial graminoid – that’s a fancy way of saying it’s a grass-like plant that comes back year after year. Native to the southeastern United States, this resilient little grass has been quietly doing its job in wetlands for centuries, and now it’s ready to work its magic in your garden too.

Where Does It Call Home?

This southeastern native thrives across Alabama, Florida, Georgia, Louisiana, Mississippi, and Texas. It’s perfectly adapted to the warm, humid conditions and seasonal flooding that characterize wetlands throughout the region.

Why Your Garden (and Local Wildlife) Will Love It

Brook crowngrass isn’t just another pretty face in the plant world – it’s a hardworking member of any wetland ecosystem. Here’s why it deserves a spot in your landscape:

  • Forms attractive, dense mats with fine-textured foliage
  • Produces delicate seed heads that add subtle beauty to wet areas
  • Provides excellent erosion control along pond edges and stream banks
  • Supports overall habitat complexity for wildlife
  • Requires virtually no maintenance once established

The Perfect Spots for Brook Crowngrass

This water-loving grass is absolutely perfect for those challenging wet areas where other plants fear to tread. Consider brook crowngrass for:

  • Rain gardens and bioswales
  • Pond margins and stream banks
  • Bog gardens and wetland restorations
  • Naturalized landscape areas with poor drainage
  • Areas that experience seasonal flooding

Growing Conditions That Make It Thrive

Brook crowngrass is classified as an obligate wetland plant, which means it almost always occurs in wetlands. This tells you everything you need to know about its preferences! Here’s what it needs to be happy:

  • Moisture: Consistently moist to wet soils – the wetter, the better
  • Light: Full sun to partial shade (quite adaptable)
  • Climate: Hardy in USDA zones 8-10
  • Soil: Tolerates various soil types as long as they stay moist
  • Water levels: Handles seasonal flooding and water level changes like a champ

Planting and Care Made Simple

The beauty of native plants like brook crowngrass is that they practically grow themselves once you get them established. Here’s how to set yours up for success:

Planting Tips:

  • Plant in spring when temperatures warm up
  • Choose the wettest spot available in your landscape
  • Space plants appropriately as they may spread via rhizomes over time
  • Water regularly during establishment (which shouldn’t be hard given its wet preferences!)

Ongoing Care:

  • Keep soil consistently moist – never let it dry out completely
  • Minimal pruning or maintenance required
  • May naturally spread to form colonies in ideal conditions
  • Extremely low-maintenance once established

Is Brook Crowngrass Right for Your Garden?

Brook crowngrass is an excellent choice if you have wet areas in your landscape that need attention, want to support native plant communities, or are working on wetland restoration projects. Its fine texture and low-growing habit make it perfect for naturalized settings where you want something attractive but unobtrusive.

However, if your garden is on the dry side or you’re looking for showy flowers, this might not be your plant. Brook crowngrass is all about subtle beauty and ecological function rather than flashy displays.

The Bottom Line

Brook crowngrass may not win any beauty contests, but it’s exactly the kind of reliable, hardworking native plant that makes gardens better. If you’ve got a wet spot that needs some love, or you’re passionate about supporting local ecosystems, this southeastern native grass could be exactly what you’re looking for. Plus, there’s something deeply satisfying about growing a plant that’s been thriving in your region for thousands of years!

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 work and fewer inputs. But the simplicity of this catchphrase conceals how tricky plant selection is. While tags 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. Surprisingly, many popular landscape plants are wetland species! And what may be a wetland plant in one area, in another it might thrive in drier conditions. Also, it helps you make smarter gardening choices and grow healthy plants with less care and feeding, saving you time, frustration, and money while producing an attractive garden with greater ecological benefits.

Regions
Status
Moisture Conditions

Atlantic and Gulf Coastal Plain

OBL

Obligate Wetland - Plants with this status almost always occurs in wetlands

Eastern Mountains and Piedmont

OBL

Obligate Wetland - Plants with this status almost always occurs in wetlands

Great Plains

OBL

Obligate Wetland - Plants with this status almost always occurs in wetlands

Brook Crowngrass

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

Paspalum L. - crowngrass

Species

Paspalum acuminatum Raddi - brook crowngrass

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