North America Native Plant

Desert Seepweed

Botanical name: Suaeda suffrutescens var. detonsa

USDA symbol: SUSUD

Life cycle: perennial

Habit: subshrub

Native status: Native to the lower 48 states  

Synonyms: Suaeda duripes I.M. Johnst. (SUDU)  âš˜  Suaeda nigrescens I.M. Johnst. (SUNI2)  âš˜  Suaeda nigrescens I.M. Johnst. var. glabra (SUNIG)   

Desert Seepweed: A Rare Native Perennial for Specialized Gardens Meet desert seepweed (Suaeda suffrutescens var. detonsa), a native perennial that’s definitely not your typical garden center find. This unassuming member of the amaranth family calls the southwestern United States home, but don’t expect to stumble across it on your next ...

Rare plant alert!

Region: Conservation status by state

Status: SHQ: Status is uncertain but is somewhere between the following rankings: Uncertain taxonomy: ⚘ Possibly Extinct: Known only from historical occurrences. Still some hope of rediscovery ⚘

Desert Seepweed: A Rare Native Perennial for Specialized Gardens

Meet desert seepweed (Suaeda suffrutescens var. detonsa), a native perennial that’s definitely not your typical garden center find. This unassuming member of the amaranth family calls the southwestern United States home, but don’t expect to stumble across it on your next nature walk—this little plant is quite the rarity.

What Is Desert Seepweed?

Desert seepweed is a perennial forb, which is botanist-speak for a non-woody plant that comes back year after year. Unlike shrubs or trees, this plant lacks significant woody tissue and keeps its growing points at or below ground level—a smart strategy for surviving in harsh environments.

You might occasionally see this plant listed under its scientific synonyms, including Suaeda duripes or Suaeda nigrescens, but they’re all referring to the same uncommon species.

Where Does Desert Seepweed Grow?

This native beauty has a pretty exclusive address—you’ll only find it naturally occurring in New Mexico and Texas. Its limited range is part of what makes it such a special plant for those lucky enough to encounter it.

Should You Plant Desert Seepweed?

Here’s where things get a bit complicated. Desert seepweed carries a global conservation status of SHQ, which essentially means its rarity level is undefined—and that’s not exactly reassuring for us plant lovers. This unclear status suggests the plant might be quite rare or simply understudied.

If you’re considering adding desert seepweed to your garden, proceed with extreme caution. Only source this plant from reputable native plant nurseries that can guarantee their stock comes from ethical, sustainable sources. Never collect from wild populations, as this could further threaten an already potentially vulnerable species.

Growing Desert Seepweed: What We Know

Unfortunately, detailed growing information for this particular variety of seepweed is quite limited. What we do know is that as a native of New Mexico and Texas, it’s likely adapted to:

  • Hot, dry conditions
  • Well-draining soils
  • Full sun exposure
  • Low water requirements once established

As with most native plants from arid regions, overwatering is probably more dangerous than underwatering. Think desert conditions rather than lush garden oasis.

The Bottom Line

Desert seepweed is undoubtedly a fascinating native plant with an intriguing story, but it’s not the right choice for most home gardeners. Its rarity status and limited availability make it more of a conservation concern than a landscaping solution.

If you’re passionate about supporting native plants in New Mexico or Texas, consider reaching out to local native plant societies or botanical gardens. They might have more information about conservation efforts or ethical sourcing options for this elusive species.

For most gardeners interested in native southwestern plants, there are plenty of other wonderful, more readily available options that can provide similar ecological benefits without the conservation concerns. Your local native plant society can point you toward alternatives that are both garden-worthy and guilt-free!

Desert Seepweed

Classification

Group

Dicot

Kingdom

Plantae - Plants

Subkingdom

Tracheobionta - Vascular plants

Superdivision

Spermatophyta - Seed plants

Division

Magnoliophyta - Flowering plants

Subdivision
Class

Magnoliopsida - Dicotyledons

Subclass

Caryophyllidae

Order

Caryophyllales

Family

Chenopodiaceae Vent. - Goosefoot family

Genus

Suaeda Forssk. ex J.F. Gmel. - seepweed

Species

Suaeda suffrutescens S. Watson - desert seepweed

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