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Iris pseudacorus
Iris pseudacorus
Garden Diary

Date purchased or acquired:

Where acquired:

Location in the garden:


The next time you are buying perennials please look for our helpful labels and blue pots, and remember "The best perennials come out of the blue"!

Iris pseudacorus

Yellow Flag Iris

USDA Zone: 2-9

Plant number: 1.289.400

This vigorous species is happiest at the waterside, but adapts well to average border conditions. Plants form a tall clump of bright green, sword-like leaves, bearing small bright-yellow flowers in early summer. Nice for cutting. Seed pods are good for dried arrangements. Although native to Europe, this has escaped from gardens and naturalized in wet areas all over North America. As a result, it has been classified a noxious weeds in some jurisdictions, for example the province of Alberta. Before planting this in your garden, please confirm whether it is a restricted plant in your area. Clumps are easily divided in the fall. Easy and pest-free. CAUTION: Harmful if eaten.

Further details for
Iris pseudacorus

Optimal Growing
Appearance and
Sun Exposure
  Full Sun or
  Partial Shade
Soil Type
  Normal or
Soil pH
  Neutral or
  Alkaline or
Soil Moisture
  Average or
  Moist or
Care Level
Flower Colour
Blooming Time
  Early Summer
  Late Spring
Foliage Color
  Light Green
Plant Uses & Characteristics
  Accent: Good Texture/Form
  Attracts Butterflies
  Cut Flower
  Deer Resistant
  Dried Flower
  Drought Tolerant
  Rabbit Resistant
   90-120 cm
   35-47 inches
   60-75 cm
   23-29 inches
Foot Traffic
Growth Rate
Disclaimer: This information is presented for reference only. This plant is not currently part of our Heritage Perennials lineup.