PlantsIrises→Tall Bearded Iris (Iris 'Riverboat Blues')

Common names:
Give a thumbs up Iris
Give a thumbs up Tall Bearded Iris

Data specific to Irises (Edit)
Hybridizer: Schreiner
Year Of Registration: 1991
Year Of Introduction (May Differ From Registry): 1991
Seedling Number: W 472-C
Classification: Tall Bearded (TB)
Registered Height: 38 inches (97 cm)
Bloom Season: Mid Late
Flower Form: Ruffled
Bloom Color Classification: Blue
Flower Patterns: Self
Bloom Color Description: Medium blue
Beard Color: White
Awards: Honorable Mention: 1993
Award of Merit: 1995

General Plant Information (Edit)
Life cycle: Perennial
Sun Requirements: Full Sun to Partial Shade
Soil pH Preferences: Slightly acid (6.1 – 6.5)
Neutral (6.6 – 7.3)
Slightly alkaline (7.4 – 7.8)
Minimum cold hardiness: Zone 3 -40 °C (-40 °F) to -37.2 °C (-35)
Maximum recommended zone: Zone 9b
Flowers: Showy
Underground structures: Rhizome
Propagation: Seeds: Will not come true from seed
Propagation: Other methods: Division
Ploidy: Tetraploid
Parentage: Memphis Blues X P 81-A: ((G 11-1: (T 652-A: (Blue Mountains x Sylvan Stream) x A 137-1) x (G 1517-B x Neptune's Pool)) x L 93-5: ((Navy Strut x E 1313-A) x (Fuji's Mantle x Matinata)))
Child plants: 26 child plants


Photo gallery:

Discussion Threads about this plant
Thread Title Last Reply Replies
What is the True Color of Riverboat Blues Tall Bearded Iris? by SpringGreenThumb Jan 29, 2017 7:50 AM 0
Utah Iris Society Show....... by Paul2032 Jun 14, 2017 4:48 PM 11
Mindless chatter by Muddymitts Jun 12, 2021 6:44 PM 19,538
Blooming in my Utah Garden by Paul2032 May 20, 2012 6:55 AM 12
wanda rezac's iris list by irisawe May 18, 2020 6:07 PM 17

« Add a new plant to the database

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

« See the general plant entry for Irises (Iris)

« Visit the Irises forum

« The Irises Database Front Page

« The Plants Database Front Page

Today's site banner is by Lucius93 and is called "Bulgarian Honey Garlic"

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