North America Native Plant

Rixford’s Rockwort

Botanical name: Scopulophila rixfordii

USDA symbol: SCRI2

Life cycle: perennial

Habit: forb

Native status: Native to the lower 48 states  

Rixford’s Rockwort: A Rare Native Gem Worth Knowing About Meet Rixford’s rockwort (Scopulophila rixfordii), one of those delightfully mysterious native plants that makes you feel like you’ve stumbled upon a botanical secret. This little-known perennial forb calls the American West home, and while it may not be filling up your ...

Rare plant alert!

Region: Conservation status by state

Status: S3?: Status is uncertain but is somewhere between the following rankings: Inexact rank: ⚘ 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 ⚘

Rixford’s Rockwort: A Rare Native Gem Worth Knowing About

Meet Rixford’s rockwort (Scopulophila rixfordii), one of those delightfully mysterious native plants that makes you feel like you’ve stumbled upon a botanical secret. This little-known perennial forb calls the American West home, and while it may not be filling up your local nursery shelves anytime soon, it’s definitely worth getting acquainted with.

What Exactly Is Rixford’s Rockwort?

Rixford’s rockwort is a perennial forb, which is botanist-speak for a non-woody herbaceous plant that comes back year after year. As part of the carnation family (Caryophyllaceae), it shares some DNA with more familiar garden favorites, though this particular species has chosen a much more exclusive lifestyle.

The name rockwort gives us a pretty good hint about where this plant likes to hang out – rocky areas where many other plants would throw in the towel. It’s the kind of plant that seems to thrive on challenges, making its home in some pretty tough terrain.

Where to Find This Native Beauty

Rixford’s rockwort is a true westerner, native to California and Nevada. It’s one of those plants that really knows its neighborhood and has no interest in expanding beyond its comfort zone. This limited geographic range is part of what makes it so special – and so rare.

The Rarity Factor: Handle with Care

Here’s where things get interesting (and a bit serious). Rixford’s rockwort has a Global Conservation Status of S3?, which essentially means its conservation status is undefined but potentially of concern. In plant conservation terms, this is like having a question mark hanging over its future – we’re not entirely sure how it’s doing out there in the wild.

What does this mean for gardeners? If you’re lucky enough to encounter this plant or find a source for it, proceed with conservation in mind. This isn’t the plant to go digging up from the wild (which you should never do anyway with any native plant). If you do decide to grow it, make absolutely sure you’re getting it from a reputable source that grows their plants ethically and sustainably.

Should You Grow Rixford’s Rockwort?

The honest answer is: it’s complicated. Here’s what we know and what you should consider:

  • For the conservation-minded gardener: Growing rare natives can be a wonderful way to help preserve genetic diversity, but only when done responsibly with properly sourced plants
  • For the rock garden enthusiast: The name rockwort suggests this could be an interesting addition to rocky, challenging spots in your landscape
  • For the native plant purist: If you’re in California or Nevada, this represents authentic local flora that could play a role in supporting regional ecosystems

The Growing Conditions Mystery

Here’s where we hit a bit of a wall – specific growing information for Rixford’s rockwort is surprisingly scarce. What we can infer from its native habitat is that it likely prefers:

  • Rocky, well-draining soils (hence the rockwort name)
  • Conditions similar to other California and Nevada natives
  • Possibly drought-tolerant characteristics, given its western habitat

If you’re seriously interested in growing this plant, you’d want to research the specific conditions of its natural habitat and try to replicate those in your garden.

A Plant for Specialist Gardens

Rixford’s rockwort isn’t going to be the star of your front yard flower border. This is more of a plant for the serious native plant enthusiast, the rock garden specialist, or the conservation-minded gardener who wants to grow something truly unique. It would likely fit best in:

  • Specialized native plant collections
  • Rock gardens or alpine-style plantings
  • Conservation gardens focused on rare species
  • Educational landscapes highlighting regional flora

The Bottom Line

Rixford’s rockwort is one of those plants that reminds us how much botanical diversity exists right under our noses. While it may not be the easiest plant to find or grow, it represents the incredible variety of native species that call the American West home.

If you’re drawn to rare natives and have experience with challenging plants, Rixford’s rockwort could be an interesting addition to your collection – just make sure you’re sourcing it responsibly. For most gardeners, though, there are plenty of other California and Nevada natives that are better documented, more readily available, and equally beautiful.

Sometimes the most rewarding plants are the ones that make us work a little harder to understand and appreciate them. Rixford’s rockwort is definitely one of those plants.

Rixford’s Rockwort

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

Caryophyllaceae Juss. - Pink family

Genus

Scopulophila M.E. Jones - rockwort

Species

Scopulophila rixfordii (Brandegee) Munz & I.M. Johnst. - Rixford's rockwort

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