PlantsHardy Hibiscuses→Hardy Hibiscus (Hibiscus moscheutos 'Kopper King')

Trade name information:
Series: Fleming Hardy Hibiscus™
Cultivar name: 'Kopper King'
Common names:
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General Plant Information (Edit)
Plant Habit: Herb/Forb
Life cycle: Perennial
Sun Requirements: Full Sun
Full Sun to Partial Shade
Water Preferences: Mesic
Soil pH Preferences: Slightly acid (6.1 – 6.5)
Minimum cold hardiness: Zone 5a -28.9 °C (-20 °F) to -26.1 °C (-15 °F)
Maximum recommended zone: Zone 10b
Plant Height: 4-6 feet
Plant Spread: 2-3 feet
Leaves: Unusual foliage color
Flowers: Showy
Blooms on new wood
Flower Color: Bi-Color: white, hot pink/red eye, veining
Bloom Size: 4"-5"
Flower Time: Late spring or early summer
Late summer or early fall
Underground structures: Taproot
Wildlife Attractant: Bees
Resistances: Powdery Mildew
Tolerates dry shade
Humidity tolerant
Propagation: Seeds: Suitable for wintersowing
Sow in situ
Start indoors
Propagation: Other methods: Cuttings: Stem
Cuttings: Tip
Cuttings: Cane
Pollinators: Various insects
Containers: Suitable in 3 gallon or larger
Miscellaneous: Tolerates poor soil
Patent/Plant Breeders' Rights: Patent #US PP10,793


Celebrating HibiscusesCelebrating Hibiscuses
By dave on August 29, 2015

We open the Hibiscus Celebration Week with a look at the top cultivars, top comments, most thumbed images, and more!

(Full article8 comments)
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'Kopper King' was a featured
Plant of the Day for September 6, 2015.

Photo gallery:

This plant is tagged in:

Posted by SongofJoy (Clarksville, TN - Zone 6b) on Feb 26, 2012 2:09 PM

This hardy Hibiscus reaches 4 ft. in height. The 12" flowers are white with a red and then hot pink eye-zone that streaks out through the veination to the edges of the petals. It has a consistent copper-red leaf of a "maple cut" shape.

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Posted by tabbycat (Youngsville, LA - Zone 9b) on Jun 11, 2018 4:54 PM

My 2 plants were from a 5" wide root crown I got in a trade 5 years ago. I wanted 2 so just cut the crown in half with a serrated knife. They went straight in the ground in a flower bed against the north side of my house. It's a drier area under a gable where roof water doesn't fall and it's shady all winter but sunny all summer. They sprout in March as temps warm a little and grow to about 4' by mid May and start blooming their beautiful plate-sized flowers into summer. It's June 11, 2018, and they are full of buds and have had several flowers open since June 1. I posted a picture side by side with a paper plate to show that they grow to 8". Mine don't make seeds. Propagation would have to be by root crown division or cuttings, which I've never done.

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Posted by NHJenDion (Southern NH - Zone 5b) on Oct 28, 2019 8:10 AM

In my Zn 5 New England garden the (Japanese and other?) beetles absolutely devour this plant. I don't like to spray (Because I'd be doing it weekly!) so by the end of the season, this plant is literally naked. It's a shame because it's a great plant, but wow. They should include it in those 'bug bag traps' and they'd be more effective :\

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Plant Events from our members
lovesblooms On March 13, 2016 Seeds germinated
lovesblooms On March 5, 2016 Seeds sown
lovesblooms On February 1, 2015 Seeds sown
winter sown
tabbycat On July 1, 2020 Plant emerged
Found 3" to 5" sprouts on both
tabbycat On June 20, 2019 Bloomed
1st 8" flower of 2019 on a 3' plant with 2 more buds to open soon.
» Post your own event for this plant

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