Scientific Name:
Iris pseudacorus
Pronunciation:
EYE-riss su-dah-KOR-us
Common Name:
yellow flag iris
Family Name:
Iridaceae
Plant Type:
Flowering cut plant, Ground cover, Herbaceous perennial, Invasive plant
Key ID Features:
Leaves to 1.3m, thick, medium-green and fleshy at the base; flower cluster to 15cm wide; fruit a large showy capsule.
Habit:
Upright
Form:
Vase
Texture:
Medium - coarse
Mature Height:
1.3 - 2.0m
Mature Spread:
1.5 - 2.0m
Growth Rate:
Fast
Origin:
Africa, Europe (Naturalized In BC)
Hardiness Rating:
Zone 5: (-29 to -23 °C)
Exposure:
Full sun, Part sun/part shade, Filtered shade
Soil/Growing Medium:
Humus rich
Water Use:
Moderate, Aquatic, Wetlands
Landscape Uses:
Aquatic - ponds, Attract butterflies, Cut flower or foliage, Group or mass planting, Perennial border, Specimen plant, Spring interest, Waterside planting, Wetland - bogs
Additional Info:
Leaf Morphology:
Form:
Simple
Arrangement:
Alternate
Texture/Venation:
Leathery, Succulent, Parallel venation
Surfaces:
Lustrous
Colour in Fall:
Green-yellow
Shapes:
Linear
Apices:
Acute
Bases:
Sheathing
Margins:
Entire
Inflorescence Type:
Raceme, Floriferous
Flower Morphology:
Flowers perfect
Number Of Petals:
3
Corolla Shape:
Ligulate
Ovary Position:
Inferior
Colour (petals):
Showy, Yellow
Flower Scent:
None
Flower Time at Peak:
May, Jun, Jul
Additional Info:
Like most irises found locally, this is a single flower with one inferior ovary but the stigmas are petal-like to make it appear as three separate flowers.
Fruit Type:
Capsule
Fruit Colour:
Brown
Fruiting Time:
Aug, Sep, Oct
Additional Info:
Showy
Bark or Stem Colour:
Green
Organ Modifications:
Rhizomes, Succulent leaves
Propagation:
Seed, Division - above ground parts, Division - below ground parts
Maintenance:
Low
Pest Susceptibility:
Fungal leaf spot, Mold, Root rot, Slugs or snails (Deer resistant, Rabbit resistant)
Course(s):
- CLT Training
- HORT 2355
- Level 2 Apprenticeship
Location(s):
- (CGW) Community Garden West
- (GAZ) GAZebo
- (GAZS) GAZebo South
- (TFL) Turf Field Lab
- (TFLE) Turf Field Lab East : far parimeter near stream