North America Native Plant

Bog Alkaligrass

Botanical name: Puccinellia parishii

USDA symbol: PUPA

Life cycle: annual

Habit: grass

Native status: Native to the lower 48 states  

Bog Alkaligrass: A Hidden Gem for Wetland Gardens Meet bog alkaligrass (Puccinellia parishii), a charming little annual grass that’s perfectly at home in the soggiest spots of your garden. While it might not win any beauty contests, this unassuming native has some serious wetland credentials that make it a valuable ...

Rare plant alert!

Region: Conservation status by state

Status: S2S3: Status is uncertain but is somewhere between the following rankings: Imperiled: Extremely rare due to factor(s) making it especially vulnerable to extinction. Typically 6 to 20 occurrences or few remaining individuals (1,000 to 3,000) ⚘ Vulnerable: Either very rare and local throughout its range, found only in a restricted range (even if abundant at some locations), or factors are making it vulnerable to extinction. Typically 21 to 100 occurrences or between 3,000 and 10,000 individuals ⚘

Bog Alkaligrass: A Hidden Gem for Wetland Gardens

Meet bog alkaligrass (Puccinellia parishii), a charming little annual grass that’s perfectly at home in the soggiest spots of your garden. While it might not win any beauty contests, this unassuming native has some serious wetland credentials that make it a valuable addition to the right garden setting.

What Makes Bog Alkaligrass Special

Bog alkaligrass is a true native of the American Southwest, naturally occurring across Arizona, California, Colorado, and New Mexico. As its name suggests, this grass has adapted to thrive in alkaline wetland conditions where many other plants would struggle. It’s classified as an obligate wetland species, meaning it almost always occurs in wetlands in both the Arid West and Western Mountains regions.

A Rare Find Worth Protecting

Here’s something important to know: bog alkaligrass has a Global Conservation Status of S2S3, indicating it’s relatively rare in the wild. If you’re considering adding this species to your garden, it’s crucial to source seeds or plants responsibly from reputable native plant nurseries or seed companies that ethically collect their material. Never harvest from wild populations.

Garden Appeal and Design Role

Let’s be honest – bog alkaligrass isn’t going to be the showstopper in your garden. This delicate annual grass offers subtle, fine-textured beauty that works best in naturalistic settings. Think of it as the supporting actor that helps create authentic wetland ecosystems rather than the star of the show.

This grass shines in:

  • Wetland restoration projects
  • Bog gardens and rain gardens
  • Naturalistic water features
  • Native plant gardens focused on regional authenticity

Growing Conditions: Keep It Wet!

If you’re thinking about growing bog alkaligrass, the number one rule is simple: keep it wet. This grass demands consistently moist to saturated soil conditions. It’s perfectly adapted to alkaline soils, so don’t worry if your water source has high mineral content.

Ideal growing conditions include:

  • Full sun exposure
  • Constantly moist to waterlogged soil
  • Alkaline soil pH tolerance
  • USDA hardiness zones 4-9

Planting and Care Tips

Since bog alkaligrass is an annual, you’ll be starting fresh each year. Direct seeding works best, as this species doesn’t transplant easily. Scatter seeds in early spring directly onto wet soil surfaces. The seeds need consistent moisture to germinate, so make sure your planting area stays soggy.

Once established, maintenance is minimal – nature does most of the work. Just ensure the water supply remains consistent throughout the growing season. As an annual, the plants will complete their life cycle within one growing season, but they may self-seed if conditions remain favorable.

Wildlife and Pollinator Benefits

As a grass species, bog alkaligrass is wind-pollinated rather than insect-pollinated, so it won’t attract bees and butterflies like wildflowers do. However, it does provide habitat value for wetland wildlife and can serve as food for waterfowl and other seed-eating birds.

Should You Grow Bog Alkaligrass?

Bog alkaligrass is definitely a specialty plant for specific situations. Consider growing it if you have a wetland garden, are working on habitat restoration, or want to create an authentic southwestern wetland ecosystem. Just remember to source your seeds responsibly given its conservation status.

Skip this one if you’re looking for low-maintenance landscaping or dramatic garden impact. This grass requires very specific conditions and won’t thrive in typical garden beds. But for the right gardener with the right wet spot, bog alkaligrass offers a chance to grow something truly special and help preserve a rare piece of our native plant heritage.

Bog Alkaligrass

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

Puccinellia Parl. - alkaligrass

Species

Puccinellia parishii Hitchc. - bog alkaligrass

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