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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)
Sun Exposure: Full Sun
Danger: N/A
Bloom Color: Dark Purple/Black Maroon (Purple-Brown)
Bloom Time: Mid Summer Late Summer/Early Fall
Foliage: Herbaceous
Other details: Average Water Needs; Water regularly; do not overwater Self-sows freely; deadhead if you do not want volunteer seedlings next season
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
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
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.
I just can't say enough good things about this plant. I highly recommend it.
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!
On Mar 4, 2007, berrygirl from Braselton, GA (Zone 7b) 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!
Grown by Thomas Jefferson at Monticello, but mentioned even earlier by John Parkinson in 1629. He described this single hollyhock as being "of a darke red like blackwood. Appears black on overcast days, but will have a hint of red in the bright sun. Plant next to a white fence for a spectacular contrast. Self-seeding biennial, 5-6' tall.
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
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.
On Feb 1, 2003, asturnut from Maurice River Township, NJ (Zone 7a) 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!
One of the 'black' flowered cultivars of Hollyhock. It bears large, dark purple/maroon flowers with a pale yellow throat.
Regional...
This plant has been said to grow in the following regions:
San Mateo, California Watsonville, California Smyrna, Delaware Plainfield, Illinois Farmersburg, Indiana Dubuque, Iowa Peosta, Iowa Lansing, Kansas Cumberland, Maryland Madison Heights, Michigan Webberville, Michigan Mathiston, Mississippi Granville, New York Thomasville, North Carolina Fargo, North Dakota Warren, Ohio Hulbert, Oklahoma Oklahoma City, Oklahoma Portland, Oregon Coopersburg, Pennsylvania Sumter, South Carolina Lafayette, Tennessee Rockwall, Texas Tremonton, Utah Roanoke, Virginia Kalama, Washington Marysville, Washington Seattle, Washington Elkins, West Virginia Mukwonago, Wisconsin
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