North America Native Plant

Carter’s Flax

Botanical name: Linum carteri var. carteri

USDA symbol: LICAC3

Life cycle: annual

Habit: forb

Native status: Native to the lower 48 states  

Synonyms: Cathartolinum carteri (Small) Small (CACA53)  âš˜  Linum rigidum Pursh var. carteri (Small) C.M. Rogers (LIRIC2)   

Carter’s Flax: A Rare Florida Native Worth Protecting Meet Carter’s flax (Linum carteri var. carteri), a delicate annual wildflower that’s become one of Florida’s botanical treasures. This unassuming little plant might not win any flashy flower contests, but it holds a special place in the hearts of native plant enthusiasts ...

Rare plant alert!

Region: United States

Status: S2T1: Status is uncertain but is somewhere between the following rankings: Subspecies or variety is critically Imperiled: Extremely rare due to factor(s) making it especially vulnerable to extinction. Typically 5 or fewer occurrences or very few remaining individuals (<1,000) ⚘ 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) ⚘ Endangered: In danger of extinction throughout all or a significant portion of its range. ⚘

Region: United States

Carter’s Flax: A Rare Florida Native Worth Protecting

Meet Carter’s flax (Linum carteri var. carteri), a delicate annual wildflower that’s become one of Florida’s botanical treasures. This unassuming little plant might not win any flashy flower contests, but it holds a special place in the hearts of native plant enthusiasts and conservationists alike.

What Makes Carter’s Flax Special?

Carter’s flax is a charming forb—basically a non-woody flowering plant—that graces Florida’s landscape with its presence each growing season. As an annual, it completes its entire life cycle in one year, making every bloom precious. The plant produces small, sunny yellow flowers that may be modest in size but are perfectly adapted to their specialized habitat.

You might also see this plant listed under its scientific synonyms Cathartolinum carteri or Linum rigidum var. carteri in older botanical references, but they all refer to the same special species.

Where Does Carter’s Flax Call Home?

This native beauty is found exclusively in Florida, making it a true endemic species. It’s perfectly adapted to the unique conditions of Florida’s scrub habitats, where sandy soils and bright sunshine create the ideal environment for this specialized wildflower.

A Word of Caution: This Plant Needs Our Help

Important conservation note: Carter’s flax is classified as endangered, which means it’s at serious risk of disappearing from the wild. Before you get excited about adding this rare gem to your garden, it’s crucial to understand that this plant should only be grown from responsibly sourced material—never collected from wild populations.

If you’re interested in growing Carter’s flax, work with reputable native plant nurseries that specialize in rare Florida species and can guarantee their plants are ethically propagated, not wild-collected.

Growing Carter’s Flax: Not for the Faint of Heart

Let’s be honest—Carter’s flax isn’t the easiest plant to grow, and that’s probably part of why it’s become so rare. This species has very specific needs that mirror its natural scrub habitat:

  • Soil requirements: Well-draining sandy soil is absolutely essential—think Florida scrub conditions
  • Sun exposure: Full sun is a must for this sun-loving species
  • Water needs: Minimal watering once established; this plant prefers dry conditions
  • Climate zones: USDA zones 9-10, matching Florida’s climate

Garden Role and Landscape Design

Carter’s flax isn’t going to be the showstopper in your typical suburban landscape, but it serves an important role in specialized native gardens. Consider it for:

  • Native Florida wildflower gardens
  • Scrub habitat restoration projects
  • Conservation-focused landscapes
  • Educational gardens highlighting rare species

Benefits for Wildlife and Pollinators

While small, Carter’s flax flowers attract native pollinators, particularly small bees and other beneficial insects. By growing this species (responsibly!), you’re providing habitat for the specialized creatures that have co-evolved with Florida’s unique ecosystems.

Should You Grow Carter’s Flax?

The answer depends on your gardening goals and commitment level. If you’re a dedicated native plant enthusiast with experience growing challenging species, and you can source plants ethically, Carter’s flax could be a meaningful addition to your conservation efforts. However, if you’re looking for easy-care native options, you might want to start with more common Florida natives first.

Remember, every plant of Carter’s flax grown in cultivation from responsibly sourced material is potentially helping preserve this endangered species for future generations. That’s a pretty amazing legacy for such a small flower!

The Bottom Line

Carter’s flax represents both the beauty and fragility of Florida’s unique ecosystems. While it may not be the right choice for every gardener, those who take on the challenge of growing this rare species are participating in something much larger than gardening—they’re helping conserve a piece of Florida’s natural heritage.

Carter’s Flax

Classification

Group

Dicot

Kingdom

Plantae - Plants

Subkingdom

Tracheobionta - Vascular plants

Superdivision

Spermatophyta - Seed plants

Division

Magnoliophyta - Flowering plants

Subdivision
Class

Magnoliopsida - Dicotyledons

Subclass

Rosidae

Order

Linales

Family

Linaceae DC. ex Perleb - Flax family

Genus

Linum L. - flax

Species

Linum carteri Small - Carter's flax

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