Corydalis, Blue Corydalis, Blue Fumitory 'China Blue'

Corydalis flexuosa

Family: Papaveraceae (pa-pav-er-AY-see-ee) (Info)
Genus: Corydalis (kor-ID-ah-liss) (Info)
Species: flexuosa (fleks-yoo-OH-suh) (Info)
Cultivar: China Blue

Category:

Perennials

Water Requirements:

Average Water Needs; Water regularly; do not overwater

Sun Exposure:

Light Shade

Foliage:

Grown for foliage

Herbaceous

Smooth

Foliage Color:

Unknown - Tell us

Height:

12-18 in. (30-45 cm)

Spacing:

12-15 in. (30-38 cm)

Hardiness:

USDA Zone 6a: to -23.3 C (-10 F)

USDA Zone 6b: to -20.5 C (-5 F)

USDA Zone 7a: to -17.7 C (0 F)

USDA Zone 7b: to -14.9 C (5 F)

USDA Zone 8a: to -12.2 C (10 F)

USDA Zone 8b: to -9.4 C (15 F)

Where to Grow:

Unknown - Tell us

Danger:

Parts of plant are poisonous if ingested

Bloom Color:

Light Blue

Bloom Characteristics:

Flowers are fragrant

Bloom Size:

Unknown - Tell us

Bloom Time:

Late Spring/Early Summer

Mid Summer

Other details:

Unknown - Tell us

Soil pH requirements:

6.1 to 6.5 (mildly acidic)

6.6 to 7.5 (neutral)

7.6 to 7.8 (mildly alkaline)

Patent Information:

Non-patented

Propagation Methods:

By dividing rhizomes, tubers, corms or bulbs (including offsets)

Seed Collecting:

N/A: plant does not set seed, flowers are sterile, or plants will not come true from seed

Regional

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

Albany, California

Gresham, Oregon

Kalama, Washington

Gardeners' Notes:

0
positives
1
neutral
0
negatives
RatingContent
Neutral

On Apr 28, 2003, Baa wrote:

A light blue cultivar of Corydalis flexuosa.

They love a moist but well drained, neutral to acid, leafy soil in light shade.

A beautiful, delicate looking plant, I always find these hard to keep for more than a year or two, they go dormant in summer and seem to be difficult to wake up for the following season. We have had some success by keeping them in pots in the shaded seed house during the winter as our rainfall can be high and we are on clay soil.

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