Tall Bearded Iris (Iris 'Ossar') in the Irises Database

Common names:
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Data specific to Irises (Edit)
Hybridizer: Hans Peter Sass
Year Of Registration: 1937
Year Of Introduction (May Differ From Registry): 1937
Classification: Tall Bearded (TB)

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
Parentage: (Redwing x King Tut) X Avondale
Child plants: 6 child plants

Basic Glossary for Beginning GardenersBasic Glossary for Beginning Gardeners
October 8, 2013

New gardeners often hear words that are unfamiliar to them. Here's a short list of basic gardening terms and their definitions.

(Full article19 comments)
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Discussion Threads about this plant
Thread Title Last Reply Replies
Definitions of iris patterns by caitlinsgarden Jun 28, 2019 7:34 AM 13
You really must grow....(recommend your favourites and why) by cwwilson3 Aug 30, 2018 5:44 AM 53
Show Us Your Blooms - Spring 2015 - Part 1 by Moiris Nov 23, 2015 9:29 AM 2,013
Rhizomes arrived - very pleased by janwax Apr 9, 2017 7:45 AM 624

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