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Iris
Bearded iris

Bearded iris

Iris germanica
The classic German or common-flag iris - the presumed parent of most modern bearded-iris cultivars, probably native to southern Europe and the Mediterranean and naturalized widely. Each stalk carries up to six large, usually fragrant flowers in spring: three erect lilac standards above three purple falls marked with brown veins, white bases, and the signature yellow "beard." It has no bulb, spreading instead by creeping rhizomes that form large clumps, with sword-shaped basal foliage to about two feet.
Climate fit: broad (73/100)
Border
Focal point
Light
Full sun
Water
Moderate water
Mature size
2-3 ft tall · 18" apart
Hardy in zones
3a-10b
brutally cold to mild winters
AHS heat range
1-11
Plant range authored in AHS heat-zone terms.
Native status
Cultivated - no wild native range

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Not a food plant.

Cold hardiness

These values are location-based: this location's current hardiness is the baseline, and the 2050 value is a projected future climate for this same location.
Now
Zone 6b
Plotwright
USDA Zone 6b
-5°F to 0°F
Well-suited
Zone 7a
Plotwright
0°F to 5°F
Well-suited
In plain terms: This location has cold winters. Its winters are projected to keep warming through 2050.
Well-suited today and still thriving in 2050.

Heat tolerance

Heat tolerance values are location-based too: heat days today are observed at this site, and the 2050 value projects this same location under a future climate.
Loading AHS heat-zone data for this location...

Similar plants

Browse lateral options with similar roles, light needs, size, or native-range overlap; these are not filtered for a better climate fit.
African gladiolus (Gladiolus dalenii) - tall, one-sided arching spike of large hooded orange-red flowers shading to yellow on the lower tepals, clump of erect sword-shaped (ensiform) strap leaves at the base, whole-plant cormous-perennial habit growing in a garden bed.
Gladiolus dalenii
African gladiolus
A tall, summer-growing cormous perennial from across sub-Saharan Africa, grown for arching spikes of large, hooded, orange-to-red-and-yellow flowers in summer over fans of sword-shaped leaves. This is the widespread wild African gladiolus and a key ancestor of the big garden gladioli. Unlike the winter-growing Cape bulbs, it is a SUMMER-GROWING corm: plant in spring, grow and flower through summer, then it dies back to a dormant corm for winter. It wants full sun, well-drained soil, and summer moisture, and is one of the hardier species gladioli - surviving to about USDA zone 7 with a deep winter mulch or by lifting the corms in cold-winter areas. The corms are toxic and irritant if eaten and have been used in traditional medicine, never as food. In the wild the hooded flowers are pollinated by sunbirds and long-tongued insects.
Perennial
Full sun
Moderate water
Zones 7a-10b
Climate: narrow
Focal point
Border
Structure
African lily (Agapanthus praecox) - rounded umbels of trumpet-shaped blue flowers on tall bare stalks, strap-shaped arching basal leaves forming a clump, multiple flowering stems in a garden bed showing the perennial's clump-forming habit.
Agapanthus praecox
African lily
A bold, clump-forming evergreen perennial from South Africa, grown for big rounded umbels of trumpet-shaped blue (or white) flowers held on tall bare stalks above arching, strap-shaped leaves in mid-to-late summer. It is widely sold as "lily of the Nile," but that is a misnomer - the plant is South African (the Cape provinces and KwaZulu-Natal), not from the Nile. Spectacular and easy in warm climates, this evergreen Agapanthus is frost-tender, so in cold-winter areas it is grown in a container and overwintered under cover. The RHS has given several Agapanthus praecox forms its Award of Garden Merit and rates this evergreen species half-hardy (H3 - needs winter protection).
Perennial
Full sun / Part shade
Moderate water
Zones 8a-11
Climate: narrow
Focal point
Border
Container
Pollinator
Asiatic hybrid lily (Lilium) flower facing upward, showing six orange tepals with dark maroon basal spotting, prominent dark anthers, and narrow lance-shaped stem leaves.
Lilium (Asiatic hybrid)
Asiatic lily
Asiatic hybrids are the easiest lilies to grow and among the first to bloom - rigid, unbranched 3-4 foot stems carry large, mostly upward- and outward-facing flowers 4 to 6 inches wide in nearly every color but blue, often with dark basal spotting. The flowers are showy and good for cutting but, unlike most other lily groups, usually have little or no fragrance. Every part of the plant is dangerously toxic to cats.
Perennial
Full sun / Part shade
Moderate water
Zones 4a-8b
Climate: moderate
Focal point
Border
Autumn-joy stonecrop (Hylotelephium 'Herbstfreude') showing a large, flattened cyme of tiny star-shaped rose-pink flowers and pale buds.
Hylotelephium 'Herbstfreude'
Autumn-joy stonecrop
A clump-forming herbaceous perennial grown for its showy late-season flower heads: masses of tiny star-like flowers borne in flattened cymes 3 to 6 inches across that emerge rosy pink, deepen to rose-red, and fade to coppery-rust as they die. Gray-green, fleshy, succulent-like leaves form upright clumps to about 24 inches. Easily grown in dry-to-medium, well-drained soil in full sun, it is drought tolerant and attracts butterflies, and its foliage and dead inflorescences persist into winter for added interest.
Perennial
Full sun / Part shade
Low water
Zones 3a-9b
Climate: moderate
Border
Focal point
Pollinator
Container
Amaryllis belladonna in bloom: clusters of fragrant pink, funnel-shaped flowers held on bare, leafless stems.
Amaryllis belladonna
Belladonna lily
Amaryllis belladonna, the belladonna lily (also Jersey lily, naked-lady, or March lily), is a bulbous perennial geophyte from the Western Cape of South Africa. It is grown for its dramatic autumn display: leafless stems carry umbels of 6-12 fragrant, funnel-shaped pink to rose flowers that appear before the strap-shaped leaves emerge (a hysteranthous "naked lady" habit). It suits the front-to-mid border, gravel and Mediterranean-style plantings, and large containers in a hot, sheltered, sun-baked spot. Be plain about two cautions: the bulb is only modestly frost-hardy (roughly USDA 8/9-11; RHS H4) and is best given the warmest, driest position available in cooler areas, and ALL parts of the plant are TOXIC, containing lycorine and related Amaryllidaceae alkaloids that cause vomiting and diarrhea if eaten by people or pets. It also naturalizes readily in mild Mediterranean climates, so site it where self-sown spread is welcome.
Perennial
Full sun
Low water
Zones 8b-11
Climate: narrow
Border
Focal point
Pollinator
Container
A spherical scarlet flower head of Scadoxus multiflorus (blood lily), composed of many slender red flowers with protruding stamens, atop an upright leafless stem.
Scadoxus multiflorus
Blood lily
Scadoxus multiflorus, the blood lily (also fireball lily, ball lily, powderpuff lily), is a summer-growing bulbous geophyte in the Amaryllidaceae, native across tropical and southern Africa to the southwestern Arabian Peninsula. Each bulb sends up a leafless stem topped by a dramatic globe-shaped umbel of scarlet flowers with protruding stamens, often before or alongside the foliage. It is a focal-point container and bedding bulb prized for its bold flower head, but it is decidedly tender - RHS rates it H1B (minimum 50 to 59°F), so outside roughly USDA zones 9b–11 it must be grown under glass or as a houseplant and dried off / overwintered frost-free. CRITICAL CAUTION: every part is toxic - Scadoxus contains poisonous alkaloids and has been used as a component of arrow and fishing poisons; the bulbs are ornamental, not edible, and the plant is harmful to people, pets, and grazing animals if ingested. Handle with gloves and keep away from children and animals.
Perennial
Full sun / Part shade
Moderate water
Zones 9b-11
Climate: narrow
Focal point
Container
Border

Educator packet

Plant packet
Bearded iris educator packet
The classic German or common-flag iris - the presumed parent of most modern bearded-iris cultivars, probably native to southern Europe and the Mediterranean and naturalized widely. Each stalk carries up to six large, usually fragrant flowers in spring: three erect lilac standards above three purple falls marked with brown veins, white bases, and the signature yellow "beard." It has no bulb, spreading instead by creeping rhizomes that form large clumps, with sword-shaped basal foliage to about two feet.
Scientific name
Iris germanica
Plant type
perennial
Hardiness
3a-10b
Light
full-sun
Moisture
moderate
Spacing
18 inches
Classroom prompts
- Which plant traits are observations, and which are care recommendations?
- How would this plant fit change if the garden location moved warmer, colder, wetter, or drier?
- Which source-backed facts would you cite in a lesson handout?
Use the Sources & citations section below for page citation styles and the field-level source list.

Sources & citations

Cite this page
For lesson plans, articles, or research that uses this page. Use the source cards below to explore the references that informed this record.
Plotwright. (2026, May 17). Bearded iris (Iris germanica). Retrieved 2026, August 20, from https://plotwright.com/plants/iris-germanica
Sources used for this record
This record is compiled from the sources below.
Plants of the World Online (POWO)
Botanical research database
Missouri Botanical Garden PlantFinder
Botanical research database
GBIF
Botanical research database
Wikipedia (ecoregion articles)
Botanical research database
Wikimedia Commons
Photo · CC BY-SA 4.0
NC State Extension Gardener Plant Toolbox
University extension service