North America Native Plant

Fernleaf Biscuitroot

Botanical name: Lomatium dissectum

USDA symbol: LODI

Life cycle: perennial

Habit: forb

Native status: Native to Canada âš˜ Native to the lower 48 states  

Fernleaf Biscuitroot: A Hidden Gem for Your Native Garden If you’re looking for a drought-tolerant native plant that combines delicate beauty with serious toughness, let me introduce you to fernleaf biscuitroot (Lomatium dissectum). This unsung hero of the native plant world might not have the flashiest name, but it deserves ...

Fernleaf Biscuitroot: A Hidden Gem for Your Native Garden

If you’re looking for a drought-tolerant native plant that combines delicate beauty with serious toughness, let me introduce you to fernleaf biscuitroot (Lomatium dissectum). This unsung hero of the native plant world might not have the flashiest name, but it deserves a spot in every water-wise garden.

What Makes Fernleaf Biscuitroot Special?

Fernleaf biscuitroot is a perennial forb that brings an unexpected elegance to native plantings. Despite being a non-woody plant, it packs a visual punch with its finely divided, fern-like foliage that creates a soft, textural backdrop in your garden. Come early summer, it rewards patient gardeners with clusters of small purple flowers that seem to float above the delicate green foliage.

This native beauty can reach up to 15 feet tall (yes, you read that right!), making it quite the statement plant when fully mature. Its single-stem growth form and erect shape give it an architectural quality that works beautifully in both formal and naturalized settings.

Where Does It Come From?

Fernleaf biscuitroot is a true North American native, calling both Canada and the lower 48 states home. You’ll find it naturally growing across an impressive range that includes Alberta, British Columbia, Arizona, California, Colorado, Saskatchewan, Idaho, Montana, Nevada, New Mexico, Oregon, Utah, Washington, and Wyoming.

Why Your Garden (and Local Wildlife) Will Love It

Here’s where fernleaf biscuitroot really shines as a garden plant:

  • Drought champion: Once established, this plant laughs in the face of dry conditions
  • Fire resistant: A smart choice for areas prone to wildfires
  • Pollinator magnet: Those purple blooms attract beneficial insects like native bees and butterflies
  • Low maintenance: Requires minimal fertilizer and has low moisture needs
  • Fast growing: You won’t wait forever to see results

Perfect Garden Settings

Fernleaf biscuitroot thrives in:

  • Native plant gardens and prairie restorations
  • Xeriscape and drought-tolerant landscapes
  • Wildflower meadows
  • Natural areas where you want to encourage native wildlife

Its intermediate shade tolerance means it can handle partial shade, though it performs best in sunny locations.

Growing Conditions and Care

The beauty of fernleaf biscuitroot lies in its adaptability. This tough customer can handle:

  • Soil types: Coarse, fine, or medium-textured soils
  • pH range: 6.5 to 7.5 (slightly acidic to neutral)
  • Precipitation: Anywhere from 14 to 100 inches annually
  • Temperature: Hardy down to 7°F, suitable for USDA zones 4-8

The plant prefers well-draining soils and has high drought tolerance once established. Its deep root system (minimum 12 inches) helps it access water during dry periods.

Planting and Propagation Tips

Getting fernleaf biscuitroot established requires a bit of patience, but it’s worth the wait:

  • Seed starting: Seeds require cold stratification, so plan for a winter treatment or start them in fall
  • Planting options: Can be grown from seed or bare root plants (container plants aren’t typically available)
  • Timing: Plant in fall or early spring after stratification period
  • Spacing: Give plants room to reach their full height potential

Seeds are abundant when they do set (45,031 seeds per pound!), and the plant has moderate seed spread, so you might find pleasant surprises popping up in your garden over time.

A Few Things to Keep in Mind

While fernleaf biscuitroot is generally wonderful, there are a few characteristics to consider:

  • It’s relatively short-lived for a perennial, so plan for occasional replanting
  • The plant doesn’t resprout after cutting, so placement is important
  • It requires at least 240 frost-free days, so check your local climate
  • Commercial availability is limited to contracting only, so you may need to plan ahead

The Bottom Line

Fernleaf biscuitroot is a fantastic choice for gardeners who want to support native wildlife while creating a beautiful, low-maintenance landscape. Its combination of delicate foliage, attractive flowers, and incredible drought tolerance makes it a standout in native plant gardens. Plus, you’ll be providing crucial habitat and food sources for local pollinators and other beneficial insects.

If you can get your hands on some seeds or plants, fernleaf biscuitroot will reward your patience with years of effortless beauty and ecological benefits. It’s exactly the kind of plant that makes native gardening so rewarding!

How

Fernleaf Biscuitroot

Grows

Growing season

Spring and Summer

Lifespan

Short

Growth form & shape

Single Stem and Erect

Growth rate

Rapid

Height at 20 years
Maximum height

15.0

Foliage color

Green

Summer foliage density

Porous

Winter foliage density

Porous

Foliage retention

No

Flowering

Yes

Flower color

Purple

Fruit/seeds

Yes

Fruit/seed color

Brown

Allelopath

No

Nitrogen fixing

None

Toxic

None

C:N Ratio

Low

Fire Resistant

Yes

Foliage Texture

Fine

Low-growing Grass

No

Resproutability

No

Coppice Ability

No

Bloat

None

Fernleaf Biscuitroot

Growing Conditions

Adapted to Coarse Soil

Yes

Adapted to Medium Soil

Yes

Adapted to Fine Soil

Yes

Anaerobic tolerance

None

CaCO₃ tolerance

High

Cold Stratification

Yes

Drought tolerance

High

Nutrient requirement

Low

Fire tolerance

High

Frost-free days minimum

240

Hedge tolerance

High

Moisture requirement

Low

pH range

6.5 to 7.5

Plants per acre
Precipitation range (in)

14 to 100

Min root depth (in)

12

Salt tolerance

None

Shade tolerance

Intermediate

Min temperature (F)

7

Cultivating

Fernleaf Biscuitroot

Flowering season

Early Summer

Commercial availability

Contracting Only

Fruit/seed abundance

High

Fruit/seed season

Spring to Fall

Fruit/seed persistence

No

Propagated by bare root

Yes

Propagated by bulb

No

Propagated by container

No

Propagated by corm

No

Propagated by cuttings

No

Propagated by seed

Yes

Propagated by sod

No

Propagated by sprigs

No

Propagated by tubers

Yes

Seed per pound

45031

Seed spread rate

Moderate

Seedling vigor

Medium

Small grain

No

Vegetative spread rate

Slow

Fernleaf Biscuitroot

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

Apiales

Family

Apiaceae Lindl. - Carrot family

Genus

Lomatium Raf. - desertparsley

Species

Lomatium dissectum (Nutt.) Mathias & Constance - fernleaf biscuitroot

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