Intermediate Bearded Iris (Iris 'Congres') in the Irises Database

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

Also sold as:
CongrÈs

Data specific to Irises (Edit)
Hybridizer: Ferdinand Cayeux
Year Of Registration: 1924
Year Of Introduction (May Differ From Registry): 1924
Classification: Intermediate Bearded (IB)

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 8b
Flowers: Showy
Underground structures: Rhizome
Propagation: Seeds: Will not come true from seed
Propagation: Other methods: Division
Child plants: 2 child plants

Discussion Threads about this plant
Thread Title Last Reply Replies
Companion Thread for "The Chisholm Trail" and the "Cow Town Capers" by tveguy3 Apr 4, 2018 2:44 PM 306
Jan's Rustic Garden by janwax Nov 13, 2019 6:33 PM 2,135
Utah Iris Season 2017 by Zencat Nov 1, 2017 10:24 AM 521
Iris of the day by gemini_sage Aug 14, 2019 4:31 AM 1,488
Rebloomers by bluegrassmom Dec 7, 2016 11:50 AM 138
Roll call 2016 by Cuzz4short Jun 28, 2019 2:47 PM 553
Fleurs de Mar by Muddymitts Jun 11, 2016 8:15 PM 452
Mindless chatter by Muddymitts Nov 20, 2019 5:41 PM 17,982
Historic Iris Online Sources? by caitlinsgarden Feb 12, 2014 2:12 PM 25

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