German Bearded Iris (‘Idle Rich’)
Latin Name: Iris germanica 'Idle Rich'
Price range: $8.95 through $16.95
- Pot Size: Bare Root, 4 Inch
- Hardiness Zone: Zone 3, Zone 4, Zone 5, Zone 6, Zone 7, Zone 8, Zone 9
Iris germanica ‘Idle Rich’ opens in midseason on branched stalks that stand about three feet above the foliage. The upper petals are a soft chartreuse yellow with a smoky violet center, and the lower petals are clear yellow set off by a bright yellow-orange beard. Every edge is deeply ruffled, so each bloom looks full and rounded rather than flat. Below the flowers, gray-green leaves fan out in a low, sword-shaped clump that stays tidy long after the last petal drops. Planted in a sunny border, it reads as a warm patch of yellow with a darker eye at the heart of each flower.
Plant Details
Quick Information
- Latin Name: Iris germanica ‘Idle Rich’
- Plant Family: Iridaceae
- Common Names: Idle Rich Tall Bearded Iris, German Iris, Bearded Iris, Flag Iris
- Origin / Native Range: Garden origin; a hybrid cultivar registered in 2015 by Keith Keppel. The bearded iris group descends from species of southern Europe and the Mediterranean Basin.
- Mature Height × Width: 2.5–3 ft × 1.5–2 ft
- Exposure Requirements: Full Sun
- Irrigation Requirements: Low
- USDA Hardiness Zones: 3–9
- Cold Hardiness: –40°F– –30°F
- Bloom Time: Midseason, generally mid to late spring
- Bloom Color: Chartreuse-yellow standards with a grayed violet center, yellow falls, yellow to orange-toned beards
General Information
Each bloom stalk branches and carries several buds, so a single stem opens flowers over a period of days rather than all at once. The petals are heavily ruffled, and the edges curl and wave instead of lying flat. New plants often send up one stalk in their first spring. As the clump fills in, it produces more fans of leaves and more stalks, and the display grows noticeably stronger by the third year. The leaves stay upright and gray-green through summer and often hold on into mild winters. Clumps spread by thick surface stems called rhizomes, which store food and water. After three or four years, the center of a clump can grow crowded, and blooming falls off until the rhizomes are lifted and divided.
Bearded irises trace back to species from Mediterranean hillsides, where winters are wet, and summers are hot and dry. That history explains how this plant behaves in the garden. It draws on its rhizomes to carry through dry weather, so it needs far less summer water than most perennials once it is established. It also explains the one condition it will not forgive. Soggy ground rots the rhizome, so gravelly, sandy, or otherwise fast-draining soil matters more than rich soil. Set the top of the rhizome at or just above the surface and leave it unmulched. Give it full sun, since flowering thins out in shade. Bloom lasts only a few weeks, so pair it with plants that carry interest later in the season.
‘Idle Rich’ came out of Keith Keppel’s Oregon breeding program and was registered in 2015. It earned an Honorable Mention from the American Iris Society in 2018 and an Award of Merit in 2021. The true species Iris germanica is now rarely sold, and nearly everything offered under that name is a hybrid selection like this one. The genus name comes from the Greek goddess of the rainbow, a fitting reference to the color range breeders have developed. Please note that iris rhizomes and leaves can cause mild stomach upset if eaten, and handling cut rhizomes may irritate sensitive skin. Gloves are a reasonable precaution when dividing plants.
General Planting & Cultivation Information
Even drought-tolerant plants require regular watering until they are well established, good drainage is essential. If planting in containers, avoid pots without drainage holes.
Irrigate by watering deeply and then allowing the top several inches of soil to dry between waterings. This encourages the plant to send roots deep into the earth in search of moisture, helping it to become established, prevent root rot, build drought tolerance, and resilience to wind, heat, and cold.
The length of time between waterings will vary depending on your growing conditions and environment. Use a moisture meter for precise irrigation.
When planting, set the plant at the same depth as it was in its current container. For trees, ensure the top of the root flare is at soil level.
Young plants are vulnerable to harsh conditions, so consider growing them in larger containers until mature.
When planting in the ground, research the optimal planting season for your climate zone and protect young plants from frost.
To support establishment, consider creating a microclimate with nurse plants, shade, or wind protection. This can reduce stress, conserve soil moisture, and increase long-term success.
Protect the small, immature plants from rabbits and deer.
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