Not the plant you're looking for? Search over 300,000 plants
Herbaceous Perennial

Iris 'Orinoco Flow' (BB)
  • RHS AGM

iris 'Orinoco Flow'

'Orinoco Flow' is a vigorous perennial with glaucous green leaves and stems to 70cm, bearing up to 6 white flowers, both standards and falls finely speckled with violet, the beard white, tipped orange, and bordered with violet

Unlimited days out

Individual RHS membership from £47.25

Complete now
Buy this plant
Size
Ultimate height
0.5–1 metres
Time to ultimate height
2–5 years
Ultimate spread
0.1–0.5 metres
Growing conditions
Loam
Sand
Moisture
Well–drained
pH
Acid, Neutral
Colour & scent
StemFlowerFoliageFruit
Spring Purple White Green Grey Silver
Summer Purple White Green Grey Silver
Autumn
Winter
Position
  • Full sun
Aspect

South–facing or East–facing

Exposure
Exposed or Sheltered
Hardiness
H7
Botanical details
Family
Iridaceae
Native to the UK
No
Foliage
Deciduous
Habit
Clump forming
Potentially harmful
Ingestion may cause severe discomfort. Wear gloves and wash hands after handling
Genus

Iris may be rhizomatous or bulbous perennials, with narrow leaves and erect stems bearing flowers with 3 large spreading or pendent fall petals, alternating with 3 erect, often smaller, standard petals, in late winter, spring or early summer

Name status

Accepted

Horticultural Group
Border Bearded irises are rhizomatous herbaceous perennials to 70cm tall with flowers 10-13cm across in late spring and early summer, each fall petal bearing a prominent beard

How to grow

Cultivation

Grow in well-drained, fertile, neutral to slightly acid loam in full sun

Propagation

Propagate by division of rhizomes from midsummer to early autumn

Suggested planting locations and garden types
  • City and courtyard gardens
  • Coastal
  • Cottage and informal garden
  • Wall side borders
  • Flower borders and beds
Pruning

Remove any dying foliage in autumn, old flower stems can be cut down after flowering

Pests

May be attacked by slugs, snails and thrips

Diseases

May be subject to iris rhizome rot, a leaf spot and a virus

My Garden

Your free RHS gardening coach

Keep track of your plants with reminders & care tips – all to help you grow successfully

My plants
My calendar

My plants

My calendar

My ideas
Manage membership

My ideas

My advice

Get involved

The Royal Horticultural Society is the UK’s leading gardening charity. We aim to enrich everyone’s life through plants, and make the UK a greener and more beautiful place.