The illustrated growing guide
Bearded Iris
Iris germanica
Family Iridaceae
Est. zones 3-9
Grandma's iris survive in abandoned farmyards for a reason — they want neglect, sun on bare rhizomes, and division every few years. Mulching them kindly is how they die.
Full Sun
Low water
Moderate growth
Attracts bees
From the print shop
Growing bearded iris? Hang it.
Our Irises collection carries bearded iris — Iris germanica, print Nº 10, “Iris Germanica.”
16 designsfrom $21.99white or black groundmatte poster, unframed
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Overview
Will bearded iris suit your garden, and what goes wrong.
Will it fruit where you are?
Enter your ZIP — we look up your USDA hardiness zone (2023 map) and check it against what bearded iris actually needs.
Hardy inZones 3-9Bearded Iris at a glance
Common bearded iris problems
- IRIS BORER (the one real enemy — fall cleanup kills eggs)
- Soft Rot (follows borer or burial)
- Leaf Spot
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Growing
Light, water, soil, propagation and the season’s jobs.
How to grow bearded iris: light, water & soil
How to plant & propagate bearded iris
When to spray bearded iris
Dormant season. Remove ALL iris leaves after hard frost (borer eggs overwinter on them).
Growing season. Squish borers in spring leaf tunnels; keep rhizomes sun-baked and unmulched.
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The year
What bearded iris asks for, month by month.
The bearded iris year, month by month
BloomWhat each band means
- Bloom — flowers open — pollinators working, frost on blossoms is the danger.
The bearded iris year as text
- Jan quiet month
- Feb quiet month
- Mar quiet month
- Apr quiet month
- May bloom
- Jun quiet month
- Jul quiet month
- Aug quiet month
- Sep bloom
- Oct bloom
- Nov bloom
- Dec quiet month
These are the species' typical months — expect them a few weeks earlier in warm zones and later in cold ones. Watch the plant, not just the calendar.
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Ecology & uses
What it does for the garden, and what it is grown for.
Bearded Iris in the garden system
- Herbaceous layer perennial
What bearded iris is grown for
! Some parts toxic — see notesToxic to pets; sap irritates
Edibility, identification, and traditional-use notes here are general reference — not medical or veterinary advice, and not a claim that any plant treats or prevents anything. Medicinal ratings record how strongly a plant features in herbal tradition, nothing more. Never eat or dose a plant you have not positively identified. More on how to use this library.
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Cultivars
Named varieties of bearded iris, ruled as a catalogue.
Best bearded iris varieties & cultivars
'Immortality' (white rebloomer); 'Batik'; 'Superstition' (near-black); ten thousand others
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Sources & plant ID
Where the care distinctions come from, and how the plant is filed.
Research basis
Sources behind this profile
No extension citations are attached to bearded irisyet. The care figures below come from the library's own catalogue rather than a traced primary source.
Plant ID
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Where to buy
Third-party nurseries — not Story Thyme Farms.
Third-party nurseries, not Story Thyme Farms. Prices are theirs.
Story Thyme Farms may earn a small commission from these links, at no cost to you — it never changes what we recommend.
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Questions
Bearded Iris questions, answered straight.
Is bearded iris safe for kids and pets?
With care. Toxic to pets; sap irritates Site it accordingly if children or pets roam the garden. This is general reference, not medical or veterinary advice — call a vet or poison control if something has actually been eaten.
How do you propagate bearded iris?
Division or seed.
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Elsewhere
Where bearded iris sits in the library.
Sunflower
Zinnia
Peony
Daylily