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PlantFiles: Black-eyed Susan, Gloriosa Daisy, Yellow Ox-eye Daisy
Rudbeckia hirta

Family: Asteraceae (ass-ter-AY-see-ee) (Info)
Genus: Rudbeckia (rud-BEK-ee-a) (Info)
Species: hirta (HER-tuh) (Info)

8 vendors have this plant for sale.

100 members have or want this plant for trade.

View this plant in a garden


18-24 in. (45-60 cm)
24-36 in. (60-90 cm)

12-15 in. (30-38 cm)

USDA Zone 5a: to -28.8 C (-20 F)
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)
USDA Zone 10b: to 1.7 C (35 F)

Sun Exposure:
Sun to Partial Shade

All parts of plant are poisonous if ingested

Bloom Color:
Bright Yellow

Bloom Time:
Mid Summer
Late Summer/Early Fall


Other details:
May be a noxious weed or invasive
This plant is attractive to bees, butterflies and/or birds
Drought-tolerant; suitable for xeriscaping
Average Water Needs; Water regularly; do not overwater
Self-sows freely; deadhead if you do not want volunteer seedlings next season
This plant is resistant to deer

Soil pH requirements:
5.6 to 6.0 (acidic)
6.1 to 6.5 (mildly acidic)
6.6 to 7.5 (neutral)

Patent Information:

Propagation Methods:
From seed; direct sow outdoors in fall
From seed; direct sow after last frost

Seed Collecting:
Allow seedheads to dry on plants; remove and collect seeds
Wear gloves to protect hands when handling seeds
Properly cleaned, seed can be successfully stored

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There are a total of 53 photos.
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12 positives
3 neutrals
No negatives

Gardeners' Notes:

Positive stormyla On Jan 3, 2010, stormyla from Norristown, PA (Zone 6b) wrote:

I received this plant in a swap this spring. It bloomed non-stop for over 2 months. The hugh brown eye in the center made it very eyecatching. Definitely a keeper, I bought a few more and hope they over winter well.

Positive angele On Jun 9, 2009, angele wrote:

Planted some seed received from a DG member and am very happy with this plant. Love the multiple blooms on one plant. Planted seed mid-spring yet had first bloom by June 1. This is in a bed with lots of tall perennials and with its shorter stature it adds a lot of beauty to the front of the bed.

Positive RosemaryA On Aug 3, 2008, RosemaryA from Toronto, ON (Zone 5b) wrote:

Beautiful, easy-going plant smothered in long-lasting blooms. One of the plants in our garden has about 50 blossoms on it!

Positive pennefeather On Oct 21, 2007, pennefeather from McLean, VA (Zone 6b) wrote:

I started these from seed this spring. Germination was close to 100%. They spread quickly. With regular deadheading, these flowers have bloomed from early spring into October. They are carefree, pretty plants.

Positive sallyg On Jul 16, 2007, sallyg from Anne Arundel,, MD (Zone 7b) wrote:

I use this as a self sowing annual. This year, they are along my driveway, where they have been blooming a long time non-stop. Goldfinches love them. One plant that tipped over and rooted itself along the stem is particularly good looking, (bushier) so I may try either pinching in spring, or tipping some, to make that happen in the future. True about the powdery mildew, but in full sun in a narrow bed against the house I'm not seeing it yet., or not noticing it because of the constant full bloom.

Positive birdgrrl On Jul 3, 2007, birdgrrl from North Highlands (Sacto), CA (Zone 9a) wrote:

I didn't know what this plant was when it appeared in the flowerbed last year. It didn't grow much, wilted easily, and is a host for some kind of moth or butterfly catapillar that ate it like crazy. I almost pulled them up this spring, but they finally looked like they were growing, so I let them go. They have been blooming for at least 2 months now. They are 4 feet tall and 3 feet wide. They are so big I staked them and/or put tomato cages around them because they were spreading out so much. They are covered with 5-6" blooms that are yellow-orange, and some have a burgundy brown eye. The cone is brown. It's possibly the best plant I have this year!

Positive frostweed On Jun 13, 2007, frostweed from Josephine, Arlington, TX (Zone 8a) wrote:

Black-eyed Susan, Gloriosa Daisy, Yellow Ox-eye Daisy Rudbeckia hirta, is Native to Texas and other States.

Neutral raisedbedbob On Mar 2, 2006, raisedbedbob from Walkerton, VA (Zone 7a) wrote:

American Indians used root tea to treat worms and colds. As an external wash, they used it to treat sores, snakebite, and swelling. Root juice was used to treat earaches.

Positive Gabrielle On Jan 28, 2006, Gabrielle from (Zone 5a) wrote:

I love the bright-sunny faces of Black-eyed Susans blooming all summer. They can withstand just about anything. My information says they are hardy in zones 3-10.

Positive JLD_II On May 4, 2004, JLD_II from Olathe, KS (Zone 6a) wrote:

I really like this flower, I only wish I could tell what they will turn out like plant to plant. Some of mine have wonderful red centers around the comb and others are just yellow. This spring I noticed slight differences in the foliage on the varied flowers. It seems the 1's with the bright red flame centers have thicker foliage and the leaves are very "furry" compared to the others that are all yellow. The all yellows look exactly like brown eyed susans except for the black eyes. My flowers are only 3 inches across at the most. This plant sure varies quite a bit. My seeds all came from a single flower, the flower was all yellow with no hint of red at all. I wished I could get them all red.

Positive vagardener On Dec 8, 2003, vagardener from Springfield, VA wrote:

This plant can be invasive, but it provides such great color mid to late summer that is easy to ignore this aspect of it's genetic makeup. I have them planted in two side borders, one in full Virginia sun, and one in part shade. They do well in both areas. I have them planted with a mix of tall showy perennials, like Shasta Daisy, and False Sunflowers. They are every where in Northern Virginia and are used in Commercial landscapes. You need to keep on top of them or they will take over, especially in full sun.

Positive htop On Dec 7, 2003, htop from San Antonio, TX (Zone 8b) wrote:

San Antonio, Tx.
The perennial rudbeckia in my photo was very sturdy stalks a large attractive leaves. The flowers were 5 to 6 inches across. I use the past tense because a dog that was running loose in my neighborhood urinated on it several times and killed it. I have not been able to find another one at the local nurseries and will buy some seeds to replant some next spring if I can find them. I really liked its short stature, huge flowers that lasted a long, long time with great striations of color and its drought tolerance. Unfortunately, I do not know its cultivar.

Positive Ladyfern On Aug 9, 2003, Ladyfern from Jeffersonville, IN (Zone 6a) wrote:

The small, hairy leaves of this species are not nearly as attractive as r. fulgida, but it begins bloom earlier, has a more lemony color, and has long stems exellent for cutting. Its more slender stature helps it blend well in mixed beds. Mine looks great in with purple coneflower, liatris, and daisies.

Neutral talinum On Sep 3, 2001, talinum from Kearney, NE (Zone 5a) wrote:

Susciptible to downy mildew, rust, powdery mildew, aphid and sawfly.

Neutral jody On Nov 6, 2000, jody from MD &, VA (Zone 7b) wrote:

This species of Rudbeckia are biennial or short lived perennials. Some are treated as annuals. Some common names are 'Toto', 'Becky mixed' and 'Irish Eyes'. The flowers are yellow with cones that are brown or purplish. They grow 1' to 3' high with a spread of about 1'. All best cultivated in full sun or part shade. Hardy zones 3-10.


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

Auburn, Alabama
Birmingham, Alabama
Enterprise, Alabama
Mobile, Alabama
Saraland, Alabama
Mesa, Arizona
Jonesboro, Arkansas
Little Rock, Arkansas
Magalia, California
North Highlands, California
Lewes, Delaware
Bartow, Florida
Bokeelia, Florida
Hollywood, Florida
Homestead, Florida
Keystone Heights, Florida
Oldsmar, Florida
Sarasota, Florida
Trenton, Florida
Webster, Florida
Winter Springs, Florida
Zephyrhills, Florida
Augusta, Georgia
Cornelia, Georgia
Dallas, Georgia
Demorest, Georgia
Fayetteville, Georgia
Lilburn, Georgia
Marietta, Georgia
Monroe, Georgia
Winterville, Georgia
Anna, Illinois
Divernon, Illinois
Jacksonville, Illinois
Palmyra, Illinois
Rockford, Illinois
Thomasboro, Illinois
Washington, Illinois
Greensburg, Indiana
Indianapolis, Indiana
Jeffersonville, Indiana
Muncie, Indiana
Warren, Indiana
Iowa City, Iowa
Yale, Iowa
Olathe, Kansas
Wichita, Kansas
Farmington, Kentucky
Melbourne, Kentucky
Hammond, Louisiana
Jeanerette, Louisiana
New Iberia, Louisiana
Cumberland, Maryland
Fort George G Meade, Maryland
Laurel, Maryland
Valley Lee, Maryland
Foxboro, Massachusetts
Marlborough, Massachusetts
Bay City, Michigan
Dearborn Heights, Michigan
Grosse Ile, Michigan
Pinconning, Michigan
Royal Oak, Michigan
Ypsilanti, Michigan
Minneapolis, Minnesota (2 reports)
Florence, Mississippi
Marietta, Mississippi
Mathiston, Mississippi
Aurora, Missouri
Piedmont, Missouri
Springfield, Missouri
Imperial, Nebraska
Omaha, Nebraska
Reno, Nevada
Nashua, New Hampshire
Bridgeton, New Jersey
Vincentown, New Jersey
Elephant Butte, New Mexico
Roswell, New Mexico
Brooklyn, New York
Crown Point, New York
Deposit, New York
Himrod, New York
Jefferson, New York
Wappingers Falls, New York
Yonkers, New York (2 reports)
Candler, North Carolina
Raeford, North Carolina
Thomasville, North Carolina
West Jefferson, North Carolina
Belfield, North Dakota
Bowling Green, Ohio
Cincinnati, Ohio
Columbia Station, Ohio
North Ridgeville, Ohio
Enid, Oklahoma
Jay, Oklahoma
Tulsa, Oklahoma
Bend, Oregon
Chiloquin, Oregon
Grants Pass, Oregon
Salem, Oregon
Mercer, Pennsylvania
Norristown, Pennsylvania
Watsontown, Pennsylvania
Gaston, South Carolina
Knoxville, Tennessee (2 reports)
Mc Minnville, Tennessee
Morrison, Tennessee
Thompsons Station, Tennessee
Viola, Tennessee
Arlington, Texas
Austin, Texas
Belton, Texas
Bulverde, Texas
Fort Worth, Texas (2 reports)
Garland, Texas
Greenville, Texas
Houston, Texas
Lufkin, Texas
New Braunfels, Texas (2 reports)
New Caney, Texas
Palmer, Texas
San Antonio, Texas (2 reports)
Spring Branch, Texas
Sugar Land, Texas
Waxahachie, Texas
Leesburg, Virginia
Lexington, Virginia
Mc Lean, Virginia
Richmond, Virginia
Springfield, Virginia
Kalama, Washington
Mountlake Terrace, Washington
Puyallup, Washington
Rosalia, Washington
Brookfield, Wisconsin
Watertown, Wisconsin

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