Yellow Corydalis, Yellow Fumewort, Yellow Harlequin
Corydalis flavula

Family: Papaveraceae (pa-pav-er-AY-see-ee) (Info)
Genus: Corydalis (kor-ID-ah-liss) (Info)
Species: flavula (FLA-voo-luh) (Info)

Category:

Alpines and Rock Gardens

Annuals

Biennials

Perennials

Height:

under 6 in. (15 cm)

6-12 in. (15-30 cm)

12-18 in. (30-45 cm)

Spacing:

Unknown - Tell us

Hardiness:

Unknown - Tell us

Sun Exposure:

Unknown - Tell us

Danger:

Parts of plant are poisonous if ingested

All parts of plant are poisonous if ingested

Bloom Color:

Pale Yellow

Bright Yellow

Bloom Time:

Late Winter/Early Spring

Mid Spring

Late Spring/Early Summer

Foliage:

Unknown - Tell us

Other details:

Unknown - Tell us

Soil pH requirements:

Unknown - Tell us

Patent Information:

Unknown - Tell us

Propagation Methods:

Unknown - Tell us

Seed Collecting:

Unknown - Tell us

Regional

This plant has been said to grow in the following regions:

Millersburg, Pennsylvania

Philadelphia, Pennsylvania

Leesburg, Virginia

Gardeners' Notes:

1
positive
0
neutrals
0
negatives
RatingContent
Positive

On Jul 1, 2010, akcrafter from Philadelphia, PA wrote:

Yellow corydalis is a real charmer. Take a little plantlet, tuck it in a shady area and in a few weeks it stands healthy, broad and tall with abundant cheery yellow flowers. It will reseed and spread easily whether you want it to or not. I use it with ferns, hosta, heuchera, liriope, foamflower, yarrow, ginger, solomon's seal, astilbe, epimedium,hakone grass, and pulmonaria. Hot and dry or damp and cool doesn't seem to matter much. Mine are all in areas that drain well and my soil is rich and moderately acidic. It is a flash of yellow all summer in the shade garden. I have some in the sun and the leaves seem to wash out a bit, but the flowers are still abundant. One caution: along with reseeding enthusiastically a clump can get pretty darn large in two or three years.