North America Native Plant

Desert Twinbugs

Botanical name: Dicoria canescens wetherillii

USDA symbol: DICAW

Life cycle: annual

Habit: forb

Native status: Native to the lower 48 states  

Synonyms: Dicoria canescens A. Gray var. wetherillii (Eastw.) Cronquist (DICAW2)  âš˜  Dicoria wetherillii Eastw. (DIWE)   

Desert Twinbugs: A Rare Native Annual Worth Knowing If you’re passionate about native plants and love discovering lesser-known species, desert twinbugs (Dicoria canescens wetherillii) might just pique your interest. This annual forb is one of those quiet natives that doesn’t get much fanfare, but plays its part in the intricate ...

Rare plant alert!

Region: Conservation status by state

Status: S4T2?Q: Status is uncertain but is somewhere between the following rankings: Inexact rank: ⚘ Uncertain taxonomy: ⚘ Subspecies or variety is 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) ⚘ Apparently Secure: Uncommon but not rare, and usually widespread. Possibly cause for longterm concern. Typically more than 100 occurrences in the state or more than 10,000 individuals ⚘

Desert Twinbugs: A Rare Native Annual Worth Knowing

If you’re passionate about native plants and love discovering lesser-known species, desert twinbugs (Dicoria canescens wetherillii) might just pique your interest. This annual forb is one of those quiet natives that doesn’t get much fanfare, but plays its part in the intricate web of our native ecosystems.

What Exactly is Desert Twinbugs?

Desert twinbugs is a native annual forb, which simply means it’s a non-woody plant that completes its entire life cycle in one growing season. As a forb, it lacks the significant woody tissue you’d find in shrubs or trees, instead producing soft, herbaceous growth that dies back each year.

You might also encounter this plant listed under its scientific synonyms: Dicoria canescens A. Gray var. wetherillii or Dicoria wetherillii. But whatever name you use, you’re talking about the same charming little native.

Where Does It Call Home?

Desert twinbugs has a relatively limited native range, naturally occurring in Colorado and Utah. This restricted distribution makes it a special find for gardeners in these areas who want to grow truly local plants.

Should You Grow Desert Twinbugs?

Here’s where things get interesting – and important. Desert twinbugs has a conservation status that suggests it may be uncommon or of conservation concern. While the exact classification is somewhat unclear (listed as S4T2?Q), this indicates we should treat this plant with special care.

If you’re considering growing desert twinbugs:

  • Only source seeds or plants from reputable native plant nurseries
  • Never collect from wild populations
  • Consider it a stewardship opportunity to help preserve a potentially rare native
  • Focus on using locally-sourced material if available

The Growing Challenge

We’ll be honest with you – specific growing information for desert twinbugs is limited. As with many lesser-known natives, detailed cultivation guides are scarce. However, as an annual forb native to Colorado and Utah, we can make some educated assumptions about its preferences.

Being native to these semi-arid regions, desert twinbugs likely appreciates:

  • Well-draining soils
  • Full sun to partial shade
  • Minimal supplemental watering once established
  • Rocky or sandy soil conditions

A Plant for the Curious Gardener

Desert twinbugs isn’t going to be the showstopper in your garden border. Instead, it’s a plant for gardeners who appreciate the subtler side of native landscaping – those who understand that every native species, no matter how small or unassuming, has a role to play.

If you live within its native range and can source it responsibly, desert twinbugs could be a fascinating addition to a native plant collection, rock garden, or naturalized area. Just remember that as an annual, you’ll need to allow it to self-seed or collect seeds for replanting each year.

The Bottom Line

While we don’t have all the growing details we’d love to share, desert twinbugs represents something valuable: a connection to the specific flora of Colorado and Utah. If you’re lucky enough to find responsibly-sourced seeds or plants, and you’re committed to learning through trial and observation, this little native could be a rewarding addition to your garden.

Just remember – with potentially limited populations in the wild, every garden that successfully grows desert twinbugs could be contributing to the conservation of this native species. And that’s pretty special, don’t you think?

Desert Twinbugs

Classification

Group

Dicot

Kingdom

Plantae - Plants

Subkingdom

Tracheobionta - Vascular plants

Superdivision

Spermatophyta - Seed plants

Division

Magnoliophyta - Flowering plants

Subdivision
Class

Magnoliopsida - Dicotyledons

Subclass

Asteridae

Order

Asterales

Family

Asteraceae Bercht. & J. Presl - Aster family

Genus

Dicoria Torr. ex A. Gray - twinbugs

Species

Dicoria canescens A. Gray - desert twinbugs

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