Alphabetical Plant Listing

Iris pseudacorus (Yellow Iris)

Yellow Iris, Yellow Flag, Water Flag Iris, Daggers, Flagon, Jacob's Sword, Water Skegs, Yellow Feur-de-Lis


Vigorous, Iris pseudacorus, commonly known as Yellow Iris, is a herbaceous perennial with eye-catching bright yellow flowers, 4 in. wide (10 cm), adorned with a brown or violet veining on each fall. Sitting atop sturdy, upright, branched stalks, the flowers create a very striking display. Each flower stalk bears up to 4-12 flowers. The foliage of erect, sword-shaped, gray-green leaves is equally attractive and remains good-looking through the entire growing season. Blooming in great abundance from late spring to early summer, the flowers are followed by large seed pods.

  • Grows up to 3-5 ft. (90-150 cm). and looks most spectacular when planted in groupings of 6-8 plants. Plants will naturalize easily by spreading rhizomes to form extensive colonies, so site with care.
  • Performs best in full sun or part shade, in acidic, moist to wet, humus-rich soils. For maximum flower production, provide full sun exposure and a site with 12 in. of water over its soil (30 cm). Although this plant prefers constant moisture, it grows well in average garden soils, albeit less vigorously.
  • A welcomed addition to beds, borders, cottage gardens, city gardens, near streams or ponds, where it will provide excellent color contrast. Great choice for moist boggy areas.
  • Remove any dying foliage in fall, old flower stems can be cut down after flowering. Remove seed pods before they mature to prevent any undesired self-seeding.
  • Virtually disease and pest free. Ignored by deer!
  • Propagate by division from midsummer to early fall, plant immediately in flowering positions
  • Ingestion may cause severe discomfort.
  • Native to Europe, Africa, Asia

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Requirements

Hardiness 5 – 8
Heat Zones 3 – 8
Climate Zones 1A, 1B, 2A, 2B, 3A, 3B, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13, 14, 15, 16, 17, 18, 19, 20, 21, 22, 23, 24, A2, A3
Plant Type Perennials
Plant Family Iris - Other
Exposure Full Sun
Season of Interest Spring (Late)
Summer (Early)
Height 3' – 5' (90cm – 150cm)
Spread 2' – 3' (60cm – 90cm)
Spacing 36" (90cm)
Water Needs Average
Maintenance Low
Soil Type Clay, Loam
Soil pH Acid
Soil Drainage Moisture Retentive, Poorly Drained
Characteristics Showy
Tolerance Clay Soil, Deer, Wet Soil
Garden Uses Beds and Borders, Ponds and Streams, Wall-Side Borders
Garden Styles City and Courtyard, Coastal Garden, Informal and Cottage

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altocumulus / olyasolodenko / 123RF Stock Photo, Jacques VANNI, watcher fox, Shutterstock
 

While every effort has been made to describe these plants accurately, please keep in mind that height, bloom time, and color may differ in various climates. The description of these plants has been written based on numerous outside resources.


Requirements

Hardiness 5 – 8
Heat Zones 3 – 8
Climate Zones 1A, 1B, 2A, 2B, 3A, 3B, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13, 14, 15, 16, 17, 18, 19, 20, 21, 22, 23, 24, A2, A3
Plant Type Perennials
Plant Family Iris - Other
Exposure Full Sun
Season of Interest Spring (Late)
Summer (Early)
Height 3' – 5' (90cm – 150cm)
Spread 2' – 3' (60cm – 90cm)
Spacing 36" (90cm)
Water Needs Average
Maintenance Low
Soil Type Clay, Loam
Soil pH Acid
Soil Drainage Moisture Retentive, Poorly Drained
Characteristics Showy
Tolerance Clay Soil, Deer, Wet Soil
Garden Uses Beds and Borders, Ponds and Streams, Wall-Side Borders
Garden Styles City and Courtyard, Coastal Garden, Informal and Cottage

Great Plant Combination Ideas with Iris - Other

Guides with Iris - Other

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