Dutch iris - KPU Plant DB

Scientific Name:

Iris x hollandica

Pronunciation:

EYE-riss ex hol-AN-dih-kuh

Common Name:

Dutch iris

Family Name:

Iridaceae

Plant Type:

Flowering cut plant, Herbaceous perennial

Key ID Features:

Bulb about 10cm long; plant up to about 60cm tall; leaves narrow, linear; flowers largish blue to yellow to white flowers with no fragrance and mainly bloom in May–June.

Habit:

Upright

Form:

Vase

Texture:

Medium - fine

Mature Height:

0.7 - 1.3m

Mature Spread:

0.1 - 0.3m

Growth Rate:

Fast

Origin:

Garden origin (Iris xiphium var. praecox from Spain and var. lusitanica from France x Iris tingitana from North Africa)

Hardiness Rating:

Zone 5: (-29 to -23 °C)

Exposure:

Full sun, Part sun/part shade

Soil/Growing Medium:

Landscape Uses:

Cut flower or foliage

Additional Info:

Google

Leaf Morphology:

Glossary

Form:

Simple

Arrangement:

Alternate

Texture/Venation:

Soft flexible, Parallel venation

Surfaces:

Glabrous

Shapes:

Linear

Apices:

Acute

Bases:

Sheathing

Margins:

Entire

Inflorescence Type:

Raceme

Flower Morphology:

Flowers perfect

Number Of Petals:

3

Corolla Shape:

Ligulate

Ovary Position:

Inferior

Colour (petals):

Showy, White, Yellow, Blue, Violet (Some bicolored cvs.)

Flower Time at Peak:

May, Jun

Additional Info:

Two types of petals: Upright 'standards' and arching 'falls'. 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.