Yellow fumewort (Corydalis flavula)

Yellow fumewort

Also known as: Pale corydalis

Yellow fumewort is a flowering perennial native to the eastern United States. This plant grows mainly in disturbed grounds and floodplains. Its existence is threatened by land development such as lawns. This plant has a high alkaloid content, which likely makes it toxic.

Scientific classification

Species

Yellow fumewort (Corydalis flavula)

Buttercups, poppies and allies

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Annual

Lifespan

Herb

Plant Type

Spring

Bloom Time

15 cm to 30 cm

Plant Height

30 cm to 33 cm

Spread

8 mm to 1.3 cm

Flower Size

Yellow

Flower Color

Semi-evergreen

Leaf type

Images of Yellow fumewort

Attributes of Yellow fumewort

Growth Rate

Known for its rapid growth, yellow fumewort evolves speedily during its primary growth season, spring. In alignment with its growth velocity, yellow fumewort proliferates extensive sprouts, fostering a rapid increase in biomass. This includes an upsurge in leaf production, height, and dense clusters of small, bright yellow flowers. Its growth rate varies in different seasons, but rapid spring growth is particularly notable. These botanic characteristics promote yellow fumewort as a crucial early food source for pollinators and reflect its remarkable horticultural adaptability.

Care Guide for Yellow fumewort

Every week

Water

Partial sun

Sunlight

20 - 35 ℃

Ideal Temperature

Water: Yellow fumewort thrives in moderate moisture akin to its native woodlands, preferring evenly moist soil with weekly watering. It tolerates short dry spells and is best suited for outdoor settings, benefiting from natural rainfall, especially during its active growing season for optimal flowering and foliage growth.

Fertilize: For optimal health, yellow fumewort requires balanced nutrition fertilizers during growth, switching to high nitrogen pre-flowering. Fertilize bi-monthly at half-strength, adjusting for seasons. Apply fertilizers to moist soil to prevent root burn and enhance nutrient absorption.

Pruning: Yellow fumewort thrives with early to late spring pruning, focusing on dead or damaged stems for improved growth and air circulation. Pruning post-bloom can yield a second flowering. Clean tools to prevent disease and avoid heavy pruning to maintain shape, enhancing yellow fumewort's ornamental appeal.

Propagation: Yellow fumewort is a delicate woodland perennial that benefits from freshly sown seeds and a consistently moist, well-draining soil. It thrives in dappled shade and requires gentle handling due to fragile seeds. A cold frame can aid germination, which may take several months.

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