General Plant Information (Edit)
Plant Habit: Herb/Forb
Life cycle: Perennial
Sun Requirements: Full Sun
Full Sun to Partial Shade
Water Preferences: Wet
Wet Mesic
Mesic
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: Deciduous
Flowers: Showy
Flower Color: White
Flower Time: Summer
Late summer or early fall
Fall
Suitable Locations: Bog gardening
Wildlife Attractant: Bees
Butterflies
Hummingbirds
Propagation: Seeds: Suitable for wintersowing
Sow in situ
Start indoors
Propagation: Other methods: Cuttings: Stem
Cuttings: Tip
Cuttings: Cane
Division
Pollinators: Various insects
Containers: Suitable in 3 gallon or larger
Child plants: 2 child plants

Image

'Blue River II' was a featured
Plant of the Day for September 3, 2015.
Photo Gallery
Location: Pittsburgh, Pennsylvania
Date: 09-02-2015
Location: Photo by Carol Bacskai; zone 5b, Yorkville, IL
Date: 2022-07-27
Location: Yorkville, IL
Date: 2019-09-08
Photo is by Carol Bacskai, Zone 5b
Photo by clintbrown
Location: My garden
Date: 2017-08-14
First bloom.
Location: Zone 9 Louisiana in my backyard
Date: 2018-06-04
Pure white 8" flower on my 5ft. plant
Photo by SongofJoy
Location: Plano, TX
Date: 2022-06-20

Date: 2012-07-24
Location: Pittsburgh, Pennsylvania
Date: 9-2-2015
Location: all photos from my garden
Date: 2017-07-09
Location: Vermont
Date: 2015-09-08
Location: My garden
Date: 2019-08-31
A lovely addition to the White Flower Border.
Location: Leland, NC
Location: Botanical Gardens of the State of Georgia...Athens, Ga
Date: 2017-08-14
White Hibiscus 003
Location: Jefferson County, Texas
Date: July 13, 2016
Location: all photos from my garden
Date: 2016-08-11
Location: Leland, NC
Date: 2020-06-27
Location: Botanical Gardens of the State of Georgia...Athens, Ga
Date: 2017-07-08
White Hibiscus 001
Location: My Yard, zone 6a
Photo by SongofJoy
Location: all photos from my gardens
Date: 2018-06-19
Location: Carleton Place, Ontario Canada
Date: 2016-09-10
  • Uploaded by Ina
Location: Botanical Gardens of the State of Georgia...Athens, Ga
Date: 2018-07-08
White Hibiscus 024
Photo by pinkiris
Location: My garden
Date: 2017-08-18
First year blooms.
Location: Vermont
Date: 2016-09-01
Location: Youngsville, LA
Date: 2017-08-12
By tabbycat
Location: Mountain City, Texas
Date: 2016-07-13
Location: Leland, NC
Date: 2022-06-27
Location: western Oregon
Date: 2016-01-05
Location: My Yard, zone 6a
Location: Mountain City, Texas
Date: 2016-07-13
Location: Mountain City, Texas
Date: 2016-07-13
Comments:
  • Posted by lovesblooms (Maryland - Zone 7a) on Sep 3, 2015 10:59 AM concerning plant:
    The main thing I don't like about hibiscus flowers is the red eye. It's not that it's ugly, it's just so commonplace with lighter colored hibiscuses--and it reminds me of Rose of Sharon, which are even more common here.

    I winter sowed three of these last year from open-pollinated seed I was fast enough to grab in a group swap, and they all sprouted. Although they attempted to grow, I wasn't attentive enough to keeping away the groundhogs and deer, and they kept being chewed back. This year, though, I was much more protective--and also anxious to discover whether they would come true from seed. I was very excited when the first bloom opened pure white! I got a beautiful show from June to July. I may have gotten a longer bloom if I watered more regularly when we hit a dry spell through July, but I was happy with what I got. I did not spray these but had no rust, although some Lady Baltimore offspring (didn't come true to color) nearby did rust somewhat, in shadier conditions, and I worried it could spread.

    They're still out there, getting watered more regularly, although I don't really expect more blooms. Can't wait till next year!
  • Posted by Horntoad (Nederland, Texas - Zone 9a) on Sep 2, 2015 3:53 PM concerning plant:
    Blue River II is named after the Blue River in Oklahoma where its parent plant was found.
Plant Events from our members
lovesblooms On July 13, 2015 Bloomed
True from seed!
lovesblooms On April 20, 2015 Plant emerged
from 2014 seedling; will update whether blooms are true from seed
Horntoad On July 13, 2016 Bloomed
antsinmypants On May 7, 2021 Plant emerged
antsinmypants On February 25, 2021 Seeds sown
WS 8 in jug 30.
» Post your own event for this plant

Discussion Threads about this plant
Thread Title Last Reply Replies
Duplicate? by Bonehead Mar 26, 2023 4:59 PM 6

« Add a new plant to the database

» Search the Hibiscus Database: by characteristics or by cultivar name

« See the general plant entry for Hibiscus

« Visit the Hibiscus forum

« The Hibiscus Database Front Page

« The Plants Database Front Page

Today's site banner is by Zoia and is called "Volunteer"

This site is protected by reCAPTCHA and the Google Privacy Policy and Terms of Service apply.