Capnoides Species, Pale Corydalis, Tall Corydalis, Rock Harlequin

Capnoidessempervirens

Family
Papaveraceae (pa-pav-er-AY-see-ee)
Genus
Capnoides (kap-NOH-ih-deez)
Species
sempervirens (sem-per-VY-renz)
Synonym
Capnoides glauca
Corydalis annua
Corydalis glauca
Corydalis rosea
Corydalis sempervirens
Sun Exposure
Sun to Partial Shade
Foliage
Herbaceous
Height
18-24 in. (45-60 cm)
Spacing
15-18 in. (38-45 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)
USDA Zone 9a: to -6.6 °C (20 °F)
USDA Zone 9b: to -3.8 °C (25 °F)
Danger
N/A
Bloom Color
Pink
Pale Yellow
Bloom Time
Late Spring/Early Summer
Mid Summer
Late Summer/Early Fall
Mid Fall
Other Details
Category
Perennials
Water Requirements
Average Water Needs; Water regularly; do not overwater
Foliage Color
Blue-Green
Where to Grow
Bloom Characteristics
Bloom Size
Other details
Soil pH requirements
6.1 to 6.5 (mildly acidic)
6.6 to 7.5 (neutral)
Patent Information
Non-patented
Propagation Methods
By dividing rhizomes, tubers, corms or bulbs (including offsets)
From seed; direct sow outdoors in fall
From seed; stratify if sowing indoors
Seed Collecting
Bag seedheads to capture ripening seed
Allow pods to dry on plant; break open to collect seeds
Seed does not store well; sow as soon as possible
Regional

This plant is said to grow outdoors in the following regions:

Anchorage, Alaska

Knik-Fairview, Alaska

Lakes, Alaska

Meadow Lakes, Alaska

Palmer, Alaska

Tanaina, Alaska

Wasilla, Alaska

Fairfield, California

Oakland, California

Richmond, California

Roseville, California

Derby, Kansas

Barbourville, Kentucky

Brockton, Massachusetts

Roslindale, Massachusetts

Saint Helen, Michigan

West Branch, Michigan

Saint Paul, Minnesota

Litchfield, New Hampshire

Croton On Hudson, New York

New York City, New York

Portugal Cove-St. Philip's, Newfoundland and Labrador

Asheville, North Carolina

Winston Salem, North Carolina

Pembina, North Dakota

Clackamas, Oregon

Sunnyside, Oregon

Wilkes Barre, Pennsylvania

Leesburg, Virginia

Vancouver, Washington

show all

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Gardener's Notes:

7
positives
7
neutrals
3
negatives
Sort By:
Sort By:
A
(Zone 6b) | February 2016 | positive

This wonderful fumewort is for gardeners who want to take a closer look. It hase a fine coloration and looks very fragil but I love it

J
Litchfield, NH (Zone 5b) | October 2014 | negative

While I rarely find a plant I need to make a negative posting for, I have to admit, as an experience gardener, with limited room and time...Read More

C
ROSLINDALE, MA | May 2014 | negative

This plant is annual to biennial, and persists through self-sowing. It doesn't grow as a perennial anywhere. It is native to northern Nor...Read More

J
| May 2014 | positive

I found this plant growing in a sparse colony on top of a rock outcrop in a very remote area of forest in the Timmins area ( we are zone ...Read More

S
Augusta, ME | July 2013 | positive

We were delighted to see that seed of this plant had come along with us when we moved from a nearby farm to our central Maine lakeside ho...Read More

K
K
(Zone 7a) | May 2011 | positive

Very Lovely plant. It has a delicate look with great color combination. Have not fond it to be invasive, and actually would love for it t...Read More

W
Asheville, NC | April 2011 | neutral

My wife and I live in Asheville.. Kenilworth. And have been landscaping our 1920's home for 11 yrs. We were re-doing the flower bed on t...Read More

F
Plymouth, IN | July 2010 | positive

I found this beautiful plant growing in Ontario, Canada, Zone 3 A.

S
Hyannis, MA (Zone 7a) | November 2009 | positive

I love this plant. I have never found it to be invasive, as some reviewers have said. I only wish it was for me! I have grown it off and ...Read More

J
(Debra) Derby, KS (Zone 6a) | April 2009 | positive

Love it it grows in my rock garden and is very pretty.. new for me, will have some for trades at end of summer

C
Parkesburg, PA | January 2009 | neutral

Bought one of these beautiful plants at a local nursery. It flowered wonderfully. I planted it but the next year I was sad to see it did ...Read More

S
Brockton, MA (Zone 6a) | June 2008 | neutral

I found it growing at the top of a rocky hill under power lines. It's got to be tough.

A
Portugal Cove-St. Philip's, NL (Zone 5a) | July 2007 | neutral

Growing it in 2007 as a gift... The information here c.f. self-seeding is very important. I thought it might be perennial, but a self...Read More

G
Anchorage, AK (Zone 4a) | September 2006 | negative

While C. sempervirens has beautiful little flowers it reseed profusely and will take over a flower bed. It is only suitable for wild ar...Read More

M
Saint Paul, MN | June 2005 | neutral

Rock Harlequin grows wild in Northern Minnesota, which is where I got the seeds to start mine. They have a strange tendency to appear an...Read More

C
| May 2003 | neutral

I just found one of these at our camp near Clearfield, Pennsylvania. It was just starting to bloom and I hope to be able to harvest seed...Read More

G
Wentworth, SD (Zone 4a) | January 2001 | neutral

Corydalis sempervirens is a hardy annual. The foliage is a blue green and is multilobed. The flowers are pink with a yellow tip and hav...Read More

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