Bearded Iris (Iris germanica)
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Plant Details & Care
Growth Category
Moderate
Temperature Range
10 – 28 °C °C
Light Requirement
Full sun (at least 6 hrs/day; blooms best with plenty of sunlight)
Agro Ecology
Sub-humid, temperate
Watering Frequency
Once a week during growth; less in dormant season
Once a week during growth; less in dormant season
Region
Ethiopian highlands (Addis Ababa, Debre Birhan, Bahir Dar, etc.)
Behavior
Grows from rhizomes that spread horizontally.
Produces sword-shaped leaves and tall stems with showy flowers in spring.
Dormant in hot/dry periods; comes back with rain/cooler season.
Needs to be divided every 3–4 years to stay vigorous.
Produces sword-shaped leaves and tall stems with showy flowers in spring.
Dormant in hot/dry periods; comes back with rain/cooler season.
Needs to be divided every 3–4 years to stay vigorous.
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Treatment
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PestsIris borers, aphids, thrips, slugs/snails
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DiseasesRhizome rot (from poor drainage), leaf spot, rust
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Treatmentâś… Do:
Plant in sunny, airy spots for best flowering.
Space plants at least 30–40 cm apart for airflow.
Fertilize lightly with phosphorus-rich feed before flowering.
Divide and replant clumps every 3–4 years.
Remove spent flowers to encourage more blooms.
❌ Don’t:
Don’t bury rhizomes too deep → they will rot and not flower.
Don’t water too frequently—better to keep soil slightly dry.
Don’t leave old, rotting foliage—it spreads disease.
Don’t crowd plants—poor airflow encourages fungal issues.