North America Native Plant

Smallflower Fumewort

Botanical name: Corydalis micrantha

USDA symbol: COMI2

Life cycle: annual

Habit: forb

Native status: Native to the lower 48 states  

Smallflower Fumewort: A Delicate Native Annual for Spring Gardens If you’re looking for a charming little wildflower that brings early spring magic to your garden, meet smallflower fumewort (Corydalis micrantha). This dainty native annual might not be the showiest plant in your garden center, but it offers something special for ...

Smallflower Fumewort: A Delicate Native Annual for Spring Gardens

If you’re looking for a charming little wildflower that brings early spring magic to your garden, meet smallflower fumewort (Corydalis micrantha). This dainty native annual might not be the showiest plant in your garden center, but it offers something special for gardeners who appreciate the subtle beauty of our native flora.

What is Smallflower Fumewort?

Smallflower fumewort is a delicate annual forb native to much of the United States. As a forb, it’s an herbaceous plant without woody stems—think of it as nature’s version of a soft, gentle groundcover that appears in spring and gracefully exits when summer heat arrives.

This little plant produces clusters of tiny yellow flowers that dance above finely divided, almost fern-like foliage. True to its name, the flowers are quite small, but what they lack in size they make up for in delicate charm and ecological value.

Where Does It Grow Naturally?

Smallflower fumewort has an impressive native range across the eastern and central United States. You’ll find it growing wild in Alabama, Arkansas, Florida, Georgia, Illinois, Indiana, Iowa, Kansas, Kentucky, Louisiana, Minnesota, Mississippi, Missouri, Nebraska, North Carolina, Oklahoma, South Carolina, South Dakota, Tennessee, Texas, and Wisconsin.

Why Consider Growing Smallflower Fumewort?

Here are some compelling reasons to welcome this native annual into your garden:

  • Early spring interest: It blooms when most other plants are still waking up
  • Native plant benefits: Supports local ecosystems and wildlife
  • Low maintenance: Once established, it pretty much takes care of itself
  • Pollinator friendly: Small bees and beneficial insects appreciate the nectar
  • Natural look: Perfect for woodland gardens and naturalized areas

Wildlife and Ecological Benefits

While smallflower fumewort isn’t a major food source for large animals or birds (providing only 2-5% of their diet), it still plays a valuable role in the ecosystem. Small pollinators visit the flowers, and the plant contributes to the overall biodiversity of native plant communities. Every native plant, no matter how small, adds to the complex web of relationships that support healthy ecosystems.

Growing Conditions and Care

The beauty of smallflower fumewort lies in its simplicity. This adaptable little plant thrives in USDA hardiness zones 4-8 and prefers:

  • Light: Partial shade (though it can tolerate some sun in cooler climates)
  • Soil: Moist, well-draining soil with average fertility
  • Water: Regular moisture in spring; it naturally dies back as summer heat increases
  • Temperature: Cool weather lover that emerges in early spring

Planting and Maintenance Tips

Growing smallflower fumewort is refreshingly straightforward:

  • Seeding: Scatter seeds in fall or early spring in prepared soil
  • Self-seeding: Once established, it will often self-seed for next year’s display
  • Maintenance: Minimal care required—just let it do its thing!
  • Summer dormancy: Don’t worry when it disappears in summer heat; that’s completely normal

Perfect Garden Companions

Smallflower fumewort works beautifully in:

  • Woodland gardens alongside spring ephemeral wildflowers
  • Natural areas where you want to encourage native plant diversity
  • Wildflower meadows as part of a mixed native planting
  • Shaded borders where early spring interest is desired

Is Smallflower Fumewort Right for Your Garden?

This charming native is perfect for gardeners who appreciate subtle beauty and want to support local ecosystems. It’s ideal if you enjoy the ephemeral nature of spring wildflowers and don’t mind plants that follow natural seasonal cycles rather than providing constant color.

However, if you’re looking for long-lasting summer color or dramatic garden impact, you might want to consider this as part of a larger planting rather than a standalone feature.

Smallflower fumewort reminds us that some of the most rewarding garden experiences come from working with nature’s rhythms rather than against them. This gentle native annual offers a perfect opportunity to create habitat while enjoying the quiet beauty of our native flora.

Wildlife Status

Want to attract wildlife or keep hungry critters away from your garden? Understanding the relationship between plants and wildlife is key. While plant tags may indicate deer and rabbit resistance, they don't tell the full story. Every gardener has experienced the disappointment of purchasing "deer-resistant" plants only to find them nibbled to the ground!

The extent to which plants are resistant to animal browsing is a matter of degree. Likewise, the extent to which a plant attracts wanted visitors also varies. Whether you want a garden full or free of wildlife, learning about interactions between a plant and wild animals can help you make smarter choices for the garden you desire.

As shown below Shrubby Indian Mallow isn't a large food source for animals or birds. You can confidently add this plant to your garden and rest assured knowing it's unlikely to be devoured by four-legged visitors.

Small animals

not a food source

not a source of cover

Large animals

2-5% of diet

Sparsely used as cover

Terrestrial birds

2-5% of diet

Sparsely used as cover

Water birds

not a food source

not a source of cover

Sources:

Everitt, J.H., D.L. Drawe, and R.I. Lonard. 1999. Field guide to the broad leaved herbaceous plants of South Texas used by livestock and wildlife. Texas Tech University Press. Lubbock.

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