Native Plants

Rich’s Seepweed

Suaeda maritima richii

USDA symbol: SUMAR

perennial subshrub

Canada: native
Lower 48 states: native

If you’re gardening near the coast and struggling with salt spray, sandy soil, and harsh maritime conditions, Rich’s seepweed (Suaeda maritima richii) might just be the unsung hero your landscape needs. This tough little perennial doesn’t win any beauty contests, but what it lacks in flashy flowers, it makes up ...

Rich’s Seepweed may be listed as rare in your area.
Global Conservation Status

Status: S5T3 | Secure: At low or no risk of extinction in the area due to an extensive range, abundant populations, and with little to no concern of declines or threats.

Rich’s Seepweed: A Hardy Coastal Native for Specialized Gardens

If you’re gardening near the coast and struggling with salt spray, sandy soil, and harsh maritime conditions, Rich’s seepweed (Suaeda maritima richii) might just be the unsung hero your landscape needs. This tough little perennial doesn’t win any beauty contests, but what it lacks in flashy flowers, it makes up for in pure coastal resilience.

What is Rich’s Seepweed?

Rich’s seepweed is a perennial forb herb that’s perfectly adapted to life by the sea. Also known scientifically as Suaeda richii Fernald, this native plant is built for survival in conditions that would make most garden plants wave the white flag. As a member of the goosefoot family, it has that distinctive succulent-like appearance that helps it conserve water and tolerate salt.

Where Does It Call Home?

This maritime specialist is native to both Canada and the northeastern United States. You’ll find it naturally growing along the coasts of Nova Scotia, Prince Edward Island, Maine, Massachusetts, New Hampshire, Pennsylvania, and Newfoundland. It’s perfectly at home in salt marshes, coastal meadows, and anywhere the ocean’s influence is strong.

  • Species observed
  • No observations

A Word of Caution: This One’s Getting Rare

Here’s where we need to pump the brakes a bit. Rich’s seepweed carries a Global Conservation Status of S5T3, which indicates some level of conservation concern. If you’re interested in adding this plant to your coastal garden, please make sure you source it responsibly from reputable native plant nurseries rather than collecting from wild populations. Every little bit helps when it comes to protecting our native coastal flora.

Why Would You Want Rich’s Seepweed?

Let’s be honest – Rich’s seepweed isn’t going to be the star of your Instagram garden photos. But here’s why coastal gardeners should give it serious consideration:

  • Ultimate salt tolerance: This plant actually thrives in saline conditions that kill most other plants
  • Low maintenance: Once established, it pretty much takes care of itself
  • Native credentials: Supporting local ecosystems by planting native species
  • Erosion control: Helps stabilize coastal soils with its root system
  • Authentic coastal look: Perfect for naturalistic seaside landscapes

Growing Rich’s Seepweed Successfully

Ideal Growing Conditions

Rich’s seepweed is happiest in conditions that mirror its natural coastal habitat. Think full sun, saline soils, and good drainage. It thrives in USDA hardiness zones 3-7, making it suitable for most northeastern coastal areas where it naturally occurs.

Planting Tips

  • Choose a sunny location with good drainage
  • Saline or brackish conditions are preferred – this isn’t a plant for inland freshwater gardens
  • Plant in spring after the last frost
  • Space plants according to mature spread (specific dimensions vary, but give them room to establish)

Care and Maintenance

The beauty of Rich’s seepweed lies in its low-maintenance nature. Once established, it requires minimal care. Avoid overwatering or adding fertilizers – this plant is adapted to lean, salty conditions and too much pampering can actually harm it.

Garden Design Ideas

Rich’s seepweed works best in specialized coastal gardens where its unique adaptations can shine. Consider using it in:

  • Salt marsh restoration projects
  • Coastal erosion control plantings
  • Naturalistic seaside landscapes
  • Native plant gardens near the coast
  • Low-maintenance coastal groundcover areas

The Bottom Line

Rich’s seepweed isn’t for every garden or every gardener. But if you’re dealing with coastal conditions and want to support native plant communities, this tough little perennial deserves consideration. Just remember to source it responsibly and give it the specialized growing conditions it needs to thrive. Your coastal garden – and local ecosystem – will thank you for choosing this authentic maritime native.

Suaeda maritima richii is also known as...

Often we refer to plants by their common names. When shopping for plants the scientific name is the best way to positively identify the plant species you desire. But some plants have more than one name! While it doesn't happen often, nurseries might display one name while you're searching for another. Suaeda maritima richii is also known as:

Suaeda richii | USDA symbol: SURI

Why do some plants have more than one name? Over time plant species may be renamed for a few reasons:

  1. Botanists in different regions named the same plant without knowing it had already been classified.
  2. A species was reclassified after scientific advances in, for example, DNA analysis.
  3. Slight variations within a species are sometimes mistakenly identified as entirely new species.

Classification

Group: Dicot
Kingdom: Plantae - Plants
Subkingdom: Tracheobionta - Vascular plants
Superdivision: Spermatophyta - Seed plants
Division: Magnoliophyta - Flowering plants
Class: Magnoliopsida - Dicotyledons
Subclass: Caryophyllidae
Order: Caryophyllales
Family: Chenopodiaceae Vent. - Goosefoot family
Genus: Suaeda Forssk. ex J.F. Gmel. - seepweed

Species: Suaeda maritima (L.) Dumort. - herbaceous seepweed

Subspecies: Suaeda maritima (L.) Dumort. ssp. richii (Fernald) Bassett & C.W. Crompton - Rich's seepweed

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