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)
Sun Exposure: Sun to Partial Shade
Bloom Color: Pink Pale Yellow
Bloom Time: Late Spring/Early Summer Mid Summer Late Summer/Early Fall Mid Fall
Foliage: Herbaceous Blue-Green
Other details: Average Water Needs; Water regularly; do not overwater
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
On Apr 17, 2011, wnc_native from Asheville, NC wrote:
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 the north side of our home and the plant was coupled with a columbine. We haven't seen the plant in our neighborhood. Thought it was interesting that it just showed up.
On Nov 21, 2009, sillybug5 from Winston Salem, NC (Zone 7a) wrote:
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 on for 30 years. Here in the South and in Massachusetts. You rarely see a flower with this color combination. The contrast with the blue green leaf is striking. A favorite.
On Jan 6, 2009, canipity from Parkesburg, PA wrote:
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 not come back. A month later I was cleaning out a corner of old flower pots and was wonderfully suprised to find four new babies, flowers and all growing out of a pot filled with dirt and broken bottles. Don't know how the seeds made it there but I was. Needless to say I picked out the glass and spinkled spent seeds back in the pot. Hope I'll have new babies next year. And yes the plant was advertised as an perennial, but now I see it's probably a reseeding annual.
On Jul 28, 2007, aguy1947 from Portugal Cove-St. Philip's, NL (Zone 5a) wrote:
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-seeding annual can be a nuisance. Many thanks to previous contributors concerning this item. Note: I do like the foliage and the flowers.
On Sep 27, 2006, Grasmussen from Anchorage, AK (Zone 4a) wrote:
While C. sempervirens has beautiful little flowers it reseed profusely and will take over a flower bed. It is only suitable for wild areas. It grows as both an annual and a biannual. Seeds witch germinate early in the season will bloom and die in one season, but seeds witch germinate late in the season will over winter and bloom the second season. Seed can remain dormant for many years. Once it has seeded into disturbed soil, it will continue to reappear for a long time. I have been pulling it from one area for the past four years, and the area is currently full of sempervirens.
On Jun 20, 2005, MN_Darren from Saint Paul, MN wrote:
Rock Harlequin grows wild in Northern Minnesota, which is where I got the seeds to start mine. They have a strange tendency to appear and disappear from year to year. I think that the plants are biennial. Full sized plants never show up the following year. One year I'll have a couple, the next year, none will be visible, then the following year I'll have dozens. Sprinkle the seeds and just let them do their thing. Definitely could become invasive, but prodigal. The form is very similar to a columbine, though it's actually a relative of the bleeding hearts. The bluish foliage is interesting. Mine usually bloom from May to June, starting even before the Aquillegias.
On Jan 16, 2001, gardener_mick from Wentworth, SD (Zone 4a) wrote:
Corydalis sempervirens is a hardy annual. The foliage is a blue green and is multilobed. The flowers are pink with a yellow tip and have a single spur. They are also known as Capnoides sempervirens. They grow between 8-30" and do best in full light in dry gravelly soil and in open woodlands. These flower from July to September and favor climates with cold winters and cool summers. These flowers set a lot of seed and my have a tendancy to be invasive if not kept in check. This is a very pretty flower.
This plant has been said to grow in the following regions:
Anchorage, Alaska Wasilla, Alaska Fairfield, California Oakland, California Richmond, California Roseville, California Derby, Kansas Brockton, Massachusetts Saint Helen, Michigan West Branch, Michigan St Paul, Minnesota Croton-on-hudson, New York New York, New York Portugal Cove-st. Philip's, Newfoundland and Labrador Biltmore Forest, North Carolina Winston-salem, North Carolina Pembina, North Dakota Clackamas, Oregon Laflin, Pennsylvania Vancouver, Washington