Alcea, Common Hollyhock, Garden Hollyhock 'Nigra'
Alcea rosea
| Family: | Malvaceae (mal-VAY-see-ee) (Info) |
| Genus: | Alcea (al-KEE-uh) (Info) |
| Species: | rosea (RO-zee-uh) (Info) |
| Cultivar: | Nigra |
View this plant in a gardenCategory:
Biennials
Perennials
Water Requirements:
Average Water Needs; Water regularly; do not overwater
Sun Exposure:
Full Sun
Foliage:
Herbaceous
Foliage Color:
Height:
4-6 ft. (1.2-1.8 m)
6-8 ft. (1.8-2.4 m)
Spacing:
24-36 in. (60-90 cm)
Hardiness:
USDA Zone 5b: to -26.1 °C (-15 °F)
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)
USDA Zone 10a: to -1.1 °C (30 °F)
Where to Grow:
Danger:
N/A
Bloom Color:
Dark Purple/Black
Maroon/Burgundy
Bloom Characteristics:
Bloom Size:
Bloom Time:
Mid Summer
Late Summer/Early Fall
Other details:
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:
From seed; direct sow outdoors in fall
From seed; winter sow in vented containers, coldframe or unheated greenhouse
From seed; sow indoors before last frost
From seed; direct sow after last frost
Self-sows freely; deadhead if you do not want volunteer seedlings next season
Seed Collecting:
Allow pods to dry on plant; break open to collect seeds
N/A: plant does not set seed, flowers are sterile, or plants will not come true from seed
Regional
This plant is said to grow outdoors in the following regions:
Anchorage, Alaska
Amesti, California
Corralitos, California
Elkhorn, California
Emeryville, California
Interlaken, California
Pajaro, California
San Mateo, California
Watsonville, California
Smyrna, Delaware
Plainfield, Illinois
Rockford, Illinois
Springfield, Illinois
Farmersburg, Indiana
Indianapolis, Indiana
Dubuque, Iowa
Peosta, Iowa
Lansing, Kansas
Cumberland, Maryland
Madison Heights, Michigan
Webberville, Michigan
Mathiston, Mississippi
Mount Laurel, New Jersey
Granville, New York
Thomasville, North Carolina
Fargo, North Dakota
Warren, Ohio
Hulbert, Oklahoma
Oklahoma City, Oklahoma(2 reports)
Tulsa, Oklahoma
Portland, Oregon
Coopersburg, Pennsylvania
Sumter, South Carolina
Lafayette, Tennessee
Rockwall, Texas
San Antonio, Texas
Tremonton, Utah
Roanoke, Virginia
Cathan, Washington
John Sam Lake, Washington
Kalama, Washington
North Marysville, Washington
Priest Point, Washington
Seattle, Washington
Shaker Church, Washington
Spokane, Washington
Stimson Crossing, Washington
Weallup Lake, Washington
Elkins, West Virginia
Cameron, Wisconsin
Mukwonago, Wisconsin
Kinnear, Wyoming
Riverton, Wyoming
Sundance, Wyoming
show allGardeners' Notes:
| Rating | Content |
|---|---|
| Positive | On Apr 18, 2012, Mego27 from Louisville, KY wrote: Started from seeds last year. Planted beside a concrete block shed in poor soil with no amendments. After an extremely mild winter in Kentucky the plant is almost 6 feet tall with numerous buds. It needs to be staked since we have had a very windy spring. I will pass along photos when it blooms! |
| Positive | On Aug 22, 2011, bazil323 from Cameron, WI (Zone 3b) wrote: Wow! What amazing blooms! You'll definitely want to stake these. Mine were at least 6 feet tall and had blooms almost all the way up the stalk. I had thought they were done blooming about a week-2 weeks ago, so I was really surprised to find more blooms open today! |
| Positive | On Jul 25, 2010, CouchHogs from Rockford, IL (Zone 5a) wrote: Taken from an excerpt from somewhere in my research. |
| Neutral | On May 16, 2010, mrs_colla from Marin, CA (Zone 9b) wrote: I planted mine form small pots last fall, and they have been growing into 7 feet tall plants, no flowers yet, fat buds yes. |
| Positive | On Jan 17, 2008, fburg696 from Farmersburg, IN wrote: I wish I could rate my experience with this plant as VERY POSITIVE because I really love this plant.It was one of the first plants in my garden.The color is very nice, great to have in the border.I have my whole sidewalk lined with these guys, a true sight for sore eyes. |
| Positive | On Jun 14, 2007, gardenbugde from Smyrna, DE (Zone 7a) wrote: I started this from seed last summer and it wintered over very well. I didn't even bother to trim it back since it wasn't that tall. It grew like gangbusters this Spring and is now almost 3 feet high. It's first flower opened on June 12th. I love the color! I've read that you should cut back to 6" in the fall. I guess I'll have to do that this year. I'm trying to get some more to grow from seed. If I get seed from mine this year, I'll be happy to share with others! |
| Positive | On Mar 4, 2007, berrygirl from Braselton, GA (Zone 8a) wrote: While I don't grow this particular named one, I do grow another "black" hollyhock- 'The Watchman'. In my humble, non-expert opinion there isn't much difference in them at all. The only differences I have noted are the fact that there are "black" single flowered varieties and also there are double flowered ones. Irregardless of what name they go by I love them! |
| Neutral | On Feb 7, 2006, digging_dirt from comebychance, NL (Zone 5b) wrote: ped i think its a biannual most hollyhocks are,i know i grow night watchman it was a the nices hollyhock i ever grow and wouldnt you know it's a biannual what a bummer |
| Neutral | On Jul 31, 2003, Ped from Mt. Pearl, NL (Zone 5b) wrote: When I bought this plant, it was called a Texas Hollyhock. when it bloomed, it was the most beautiful flower and I was so happy. That was last year, this year it did not return, at all. |
| Positive | On Feb 1, 2003, asturnut from Anchorage, AK (Zone 4b) wrote: Love this magnificent plant. The flowers are absolutely the closest you will find to black anywhere. I have several black hollyhocks and this one is the truest. Love it! |
| Neutral | On Jan 15, 2003, Baa wrote: One of the 'black' flowered cultivars of Hollyhock. It bears large, dark purple/maroon flowers with a pale yellow throat. |
