Gloriosa Daisy (Rudbeckia hirta 'Prairie Sun') in the Black Eyed Susans Database

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Common names:
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General Plant Information (Edit)
Plant Habit: Herb/Forb
Life cycle: Annual
Sun Requirements: Full Sun
Full Sun to Partial Shade
Water Preferences: Mesic
Plant Height: 2 to 3 feet
Plant Spread: 1 foot
Fruit: Edible to birds
Flowers: Showy
Flower Color: Yellow
Flower Time: Late spring or early summer
Late summer or early fall
Other: Cut back faded flowers to ensure more flowering throughout the season. To Frost.
Uses: Cut Flower
Wildlife Attractant: Bees
Resistances: Deer Resistant
Rabbit Resistant
Drought tolerant
Salt tolerant
Propagation: Seeds: Provide light
Needs specific temperature: 65 to 85░
Days to germinate: 7 to 21
Suitable for wintersowing
Sow in situ
Start indoors
Can handle transplanting
Propagation: Other methods: Division
Pollinators: Hoverflies
Containers: Suitable in 3 gallon or larger
Needs excellent drainage in pots
Awards and Recognitions: AAS (All-America Selection®): 2003 AAS Flower Award Winner; 2003 Fleuroselect Gold Medal


Garden Tours:  jmorthGarden Tours: jmorth
May 20, 2012

It's an amazing garden we're touring today, the creation of a man, his plants and his flying friends. We think you are going to enjoy this trip to Illinois. Come join us and be sure to click the images so you can enjoy the full view.

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Posted by jmorth (central Illinois) on Nov 12, 2011 3:03 AM

Self-seeds and readily crosses with other Rudbeckias. Resultant presentation is a yearly surprise.

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Posted by Marilyn (Northern KY - Zone 6a) on Oct 10, 2014 7:11 PM

'Prairie Sun' is a desirable flowering plant. It is a short-lived perennial that is best grown as an annual. Beautiful and colorful in the garden. Unique with the yellow and green cones. Can be planted in a container as well as in the ground. Stunning if grown in massed quantities. Deadhead the faded flowers to encourage more flowering. Deer and rabbit resistant. Drought tolerant, once established.

2003 AAS Flower Award Winner. Gold Medal winner at the 2003 Fleuroselect trials in England.

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Posted by Catmint20906 (Maryland - Zone 7a) on Aug 25, 2014 7:53 PM

Black-eyed Susan (Rudbeckia hirta) 'Prairie Sun' is an all-yellow cultivar. I discovered that it is one of the parent plants of R. hirta 'Denver Daisy' when my 'Denver Daisy' failed to return, but suddenly in its place the next year was a beautiful exemplar of 'Prairie Sun'!

As this example demonstrates, Rudbeckia hirta is a biennial or short-lived perennial that stays in the garden through self-seeding. Native to the eastern and central United States, It brings considerable ecological benefits to the North American garden. It is a larval host plant for the Silvery Checkerspot Butterfly and, in the central U.S., for the Gorgone Checkerspot as well. It is an excellent source of nectar for butterflies and is a Monarch Way Station plant. It attracts native bees (longhorned, leafcutter, cuckoo, bumble, sweat, green sweat, and small carpenter), and also attracts beneficial insects, including bee wolves, soldier beetles, bee flies, and syrphid flies, which consume a variety of common garden pests.

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Discussion Threads about this plant
Thread Title Last Reply Replies
Could this be 'Prairie Sun'? by eclayne Feb 11, 2015 11:06 AM 3
Banner for August 8, 2017 by Marilyn by Marilyn Aug 13, 2017 6:15 PM 11
Rudbeckia annual vs perennial by Overgrown_suncity Jul 14, 2017 1:02 PM 10
What is this flower? Daisy family? by katiedee Jun 28, 2017 11:40 AM 3
What's Blooming 2017 - Photos and Chat. by NJBob Jan 1, 2018 8:14 PM 1,563
Rudbeckia hirta prairie sun by John_fender Dec 19, 2016 4:58 PM 20
Banner for December 3, 2015 by Marilyn by Marilyn Dec 4, 2015 7:25 PM 7
Untitled by glengarry23 May 1, 2016 9:15 AM 1,994
Garden Chat and Photos by Catmint20906 Jan 2, 2016 11:47 AM 3,043
My favorite rudbeckia by Pattyw5 Jan 30, 2013 8:26 PM 53
Banner for November 1, 2012 by chelle by chelle Nov 1, 2012 7:24 PM 4

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