North America Native Plant

Lake County Dwarf-flax

Botanical name: Hesperolinon didymocarpum

USDA symbol: HEDI3

Life cycle: annual

Habit: forb

Native status: Native to the lower 48 states  

Lake County Dwarf-Flax: A Rare California Treasure Worth Protecting Have you ever heard of a plant so rare that fewer than 1,000 individuals might exist in the wild? Meet Lake County dwarf-flax (Hesperolinon didymocarpum), one of California’s most endangered wildflowers and a true botanical gem that deserves our attention and ...

Rare plant alert!

Region: Conservation status by state

Status: S1: Status is uncertain but is somewhere between the following rankings: 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) ⚘

Lake County Dwarf-Flax: A Rare California Treasure Worth Protecting

Have you ever heard of a plant so rare that fewer than 1,000 individuals might exist in the wild? Meet Lake County dwarf-flax (Hesperolinon didymocarpum), one of California’s most endangered wildflowers and a true botanical gem that deserves our attention and protection.

What Makes Lake County Dwarf-Flax Special?

This petite annual wildflower is a forb – essentially an herbaceous plant without woody stems – that belongs to California’s exclusive club of endemic species. As its common name suggests, Lake County dwarf-flax calls only one place home: Lake County, California. This tiny plant produces delicate white to pale pink flowers that, while small, pack a punch in terms of conservation significance.

Where Does It Grow?

Lake County dwarf-flax has an extremely limited geographical distribution, found only in California’s Lake County region. This narrow range makes it particularly vulnerable to habitat loss and environmental changes.

A Critical Conservation Concern

Here’s where things get serious: Lake County dwarf-flax has a Global Conservation Status of S1, meaning it’s critically imperiled. With typically five or fewer occurrences and very few remaining individuals (fewer than 1,000), this plant is dancing on the edge of extinction. This rarity status is something every gardener should understand before considering this species.

Should You Grow Lake County Dwarf-Flax?

The short answer is: proceed with extreme caution and responsibility. While growing rare native plants can contribute to conservation efforts, it’s crucial that you only obtain Lake County dwarf-flax from responsibly sourced material – never from wild populations. Here’s what you need to know:

  • Only purchase from reputable native plant nurseries with proper sourcing documentation
  • Never collect seeds or plants from wild populations
  • Consider this plant only if you’re committed to conservation gardening
  • Be prepared for a challenging growing experience

Growing Conditions and Care

If you do decide to grow this rare beauty, be prepared for some specific requirements. As a California native adapted to unique local conditions, Lake County dwarf-flax likely thrives in:

  • Well-draining soils, possibly with serpentine characteristics
  • Full sun exposure typical of chaparral habitats
  • Dry conditions once established
  • USDA hardiness zones 9-10

Since it’s an annual, you’ll need to allow it to complete its life cycle and set seed for future generations. This means resisting the urge to deadhead spent flowers!

Garden Role and Design Ideas

Lake County dwarf-flax isn’t your typical garden showstopper, but it serves an important role in specialized native plant gardens and conservation collections. Consider incorporating it into:

  • Native California wildflower meadows
  • Conservation-focused demonstration gardens
  • Educational landscapes highlighting rare species
  • Specialized collections of endemic California flora

Pollinator and Wildlife Benefits

While specific pollinator relationships aren’t well-documented, small native wildflowers like Lake County dwarf-flax typically support native bees and other small pollinators. Every native plant contributes to the broader ecosystem, and rare species often have specialized relationships we’re still discovering.

The Bottom Line

Lake County dwarf-flax represents both an opportunity and a responsibility. If you’re passionate about conservation and have experience growing challenging native plants, this species could be a meaningful addition to your garden. However, its critically imperiled status means that growing it should always be approached with the utmost respect for responsible sourcing and conservation principles.

Remember: the goal isn’t just to have a rare plant in your garden, but to contribute to the long-term survival of a species that desperately needs our help. Sometimes the most rewarding gardening experiences come from nurturing the plants that need us most.

Lake County Dwarf-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

Hesperolinon (A. Gray) Small - dwarf-flax

Species

Hesperolinon didymocarpum H. Sharsm. - Lake County dwarf-flax

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