Water
Water thoroughly when the top inch of soil feels dry. Ensure good drainage to prevent root rot, especially during winter dormancy.
Safety note: This plant may be toxic to humans and pets. See toxicity details.
Iris × germanica, the German Iris, is a rhizomatous perennial celebrated for its large, showy flowers in a wide spectrum of colors, often featuring intricate patterns and a sweet fragrance.
At-a-glance light, water, soil, and growing conditions from plant data
Full sun preferred for best flowering.
80% intensity
Tolerates partial shade.
Moderate, allow soil to dry slightly between waterings.
60% intensity
Reduce in fall and winter.
Well-drained, fertile loam or sandy soil with a neutral to slightly acidic pH.
50% intensity
Prefers moderate temperatures during growing season.
70% intensity
Tolerates cold winters.
Outdoor
50% intensity
Feed in early spring with a balanced fertilizer.
50% intensity
Avoid high nitrogen.
Safety information from plant toxicity data
| Attribute | Value |
|---|---|
| Toxic for humans | Yes 2/5 intensity |
| Toxic for pets | Yes 2/5 intensity |
| Edible | No |
Contains iridals and isoflavonoids which can cause gastrointestinal upset, skin irritation, and vomiting if ingested. Sap can cause skin irritation.
Key traits and growing stats from plant data
Watering, pruning, propagation, and repotting details from plant data
Water thoroughly when the top inch of soil feels dry. Ensure good drainage to prevent root rot, especially during winter dormancy.
Remove spent flower stalks to encourage reblooming and prevent seed formation. Cut back foliage in late fall after it has yellowed or been killed by frost to maintain tidiness and prevent disease.
Divide rhizomes in late summer or early fall every 3-5 years to rejuvenate plants and control spread. Can also be grown from seed, but flowering may take several years.
For container-grown plants, repot every 2-3 years in spring or fall into fresh potting mix. Ensure the rhizomes are just at or slightly below the soil surface.
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Monthly activity intensity for bloom and fruit across both hemispheres.
Flowering & fruiting calendar
Flowering & fruiting calendar
Photos of German Iris (Iris × germanica)
Where German Iris (Iris × germanica) is found
Density
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Common names and botanical synonyms
Botanical classification
| Rank | Name |
|---|---|
| Species | Iris × germanica |
Similar in genus Iris
Answers based on plant encyclopedia data
