North America Native Plant

Smallflower Fumewort

Botanical name: Corydalis micrantha micrantha

USDA symbol: COMIM2

Life cycle: annual

Habit: forb

Native status: Native to the lower 48 states  

Synonyms: Capnoides micranthum (Engelm. ex A. Gray) Britton (CAMI32)  âš˜  Corydalis aurea Willd. var. micrantha Engelm. ex A. Gray (COAUM)   

Smallflower Fumewort: A Delicate Native Annual for Your Wildflower Garden If you’re looking for a charming native annual that adds delicate beauty to your garden without demanding much attention, smallflower fumewort (Corydalis micrantha micrantha) might just be the perfect addition to your landscape. This unassuming little wildflower proves that sometimes ...

Smallflower Fumewort: A Delicate Native Annual for Your Wildflower Garden

If you’re looking for a charming native annual that adds delicate beauty to your garden without demanding much attention, smallflower fumewort (Corydalis micrantha micrantha) might just be the perfect addition to your landscape. This unassuming little wildflower proves that sometimes the most understated plants can make the biggest impact in creating a natural, effortless garden aesthetic.

What is Smallflower Fumewort?

Smallflower fumewort is a native annual forb that belongs to the fumitory family. As its name suggests, this plant produces small, delicate flowers that may be modest in size but are rich in charm. The botanical name Corydalis micrantha micrantha literally translates to small flower, which perfectly describes this plant’s dainty blooms.

You might also encounter this plant under its scientific synonyms, including Capnoides micranthum or Corydalis aurea var. micrantha, but regardless of the name, you’re looking at the same lovely native species.

Where Does Smallflower Fumewort Grow Naturally?

This native beauty calls a large swath of the central and eastern United States home. You’ll find smallflower fumewort growing naturally across seventeen states, from the Great Plains through the Southeast. Its native range includes Arkansas, Illinois, Indiana, Iowa, Kansas, Kentucky, Louisiana, Minnesota, Missouri, Nebraska, North Carolina, Oklahoma, South Carolina, South Dakota, Tennessee, Texas, and Wisconsin.

Why Grow Smallflower Fumewort in Your Garden?

There are several compelling reasons to consider adding this native annual to your landscape:

  • Low maintenance: As a native species, it’s perfectly adapted to local growing conditions
  • Supports local wildlife: Provides nectar for small bees and beneficial insects
  • Natural beauty: Adds delicate texture and subtle color to wildflower gardens
  • Self-seeding: Will return year after year with minimal intervention
  • Drought tolerant: Once established, requires little supplemental watering

Aesthetic Appeal and Garden Design

Smallflower fumewort brings a soft, naturalized look to garden spaces with its finely divided, blue-green foliage and small yellow flowers arranged in delicate racemes. The plant’s modest stature and airy texture make it an excellent choice for filling in gaps between larger perennials or creating a natural groundcover effect in wildflower meadows.

This charming annual works beautifully in prairie gardens, native plant landscapes, and naturalized areas where you want to achieve an effortless, wild appearance. Its delicate form provides nice contrast when planted alongside bolder native species.

Growing Conditions and Care

One of the best things about smallflower fumewort is how easy it is to grow. This adaptable native thrives in USDA hardiness zones 4-8, making it suitable for a wide range of climates across its native range.

Light requirements: Full sun to partial shade
Soil preferences: Well-draining soils; adaptable to various soil types
Water needs: Drought tolerant once established; moderate water during germination

Planting and Propagation Tips

Getting smallflower fumewort established in your garden is refreshingly straightforward:

  • Direct seeding: Sow seeds directly in the garden in fall or early spring
  • Timing: Fall planting allows for natural cold stratification over winter
  • Seed preparation: No special treatment needed for germination
  • Maintenance: Minimal care required once established
  • Self-seeding: Allow some plants to go to seed for natural reproduction

Wildlife and Pollinator Benefits

While smallflower fumewort may seem unassuming, it plays an important role in supporting local ecosystems. The small flowers provide nectar for various beneficial insects, including native bees and other pollinators. By including this native species in your garden, you’re contributing to the health of your local pollinator community.

Is Smallflower Fumewort Right for Your Garden?

If you’re drawn to low-maintenance native plants that offer subtle beauty and wildlife benefits, smallflower fumewort is definitely worth considering. It’s particularly well-suited for gardeners who appreciate the natural, informal look of wildflower gardens and prairie landscapes.

This annual works best in gardens where its self-seeding habit is welcome, as it will naturally establish new plants each year. If you prefer highly controlled, formal garden designs, you might find its naturalized growth pattern less appealing.

Overall, smallflower fumewort is an excellent choice for native plant enthusiasts looking to add authentic regional character to their landscapes while supporting local wildlife—all with minimal effort required!

Smallflower Fumewort

Classification

Group

Dicot

Kingdom

Plantae - Plants

Subkingdom

Tracheobionta - Vascular plants

Superdivision

Spermatophyta - Seed plants

Division

Magnoliophyta - Flowering plants

Subdivision
Class

Magnoliopsida - Dicotyledons

Subclass

Magnoliidae

Order

Papaverales

Family

Fumariaceae Marquis - Fumitory family

Genus

Corydalis DC. - fumewort

Species

Corydalis micrantha (Engelm. ex A. Gray) A. Gray - smallflower fumewort

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