The plant in the image is a Louisiana Iris/Yellow Flag Iris (Iris pseudacorus) Hybrid called —a striking aquatic or semi-aquatic iris species. Here’s a detailed description:

🌼 Plant Overview – Yellow Flag Iris (Iris pseudacorus):

• Flower Color: Bright golden-yellow petals with distinct dark veining on the falls (downward petals).

• Form: Large, flat flowers with the classic iris shape—3 upright petals (standards) and 3 drooping petals (falls).

• Bloom Time: Late spring to early summer (May to June).

• Height: 3 to 5 feet tall.

• Spread: 2 to 3 feet wide, spreading by rhizomes.

🌿 Foliage:

• Shape: Long, sword-shaped, and erect.

• Color: Rich medium to dark green.

• Texture: Smooth, with a slightly glossy surface.

• Resembles cattail leaves, especially in wetland settings.

🌱 Growing Conditions:

• USDA Zones: 4–9

• Light: Full sun to part shade (better flowering in full sun).

• Soil: Prefers wet, boggy soils; thrives in shallow water or poorly drained areas.

• Water: Can be grown in up to 4 inches of standing water or in moist garden beds.

🧑‍🌾 Cultural Notes:

• Excellent for pond edges, rain gardens, wetlands, and ditches.

• Can become invasive in natural waterways—monitor and manage spread.

• Plant rhizomes horizontally at or just below soil/water level.

• Divide every few years to maintain plant health and control growth.

🐝 Ecological Notes:

• Attracts pollinators like bees and butterflies.

• Provides habitat for frogs and beneficial insects in pond areas.

• Deer and rabbit resistant.

⚠️ Important Note:

• Toxic: All parts are toxic if ingested—handle with care.

• The term "pseudacorus x louisiana iris" refers to a hybrid iris resulting from a cross between Iris pseudacorus (Yellow Flag Iris) and a Louisiana iris (a group of North American native iris species, often Iris × louisiana). These hybrids combine traits from both parent species, resulting in a diverse range of flower colors and forms. 

   
   
  Elaboration:
  • Iris pseudacorus:

    This species, also known as Yellow Flag Iris, is native to Europe and was introduced to North America as an ornamental plant. It's now considered an invasive species in many areas due to its ability to spread aggressively via rhizomes and seeds. 

     

     
  • Louisiana Irises:

    These are a group of North American native irises, often categorized as Iris × louisiana, that are known for their vibrant colors and adaptability to various water conditions. 

     

     
  • Hybrids:

    The cross between Iris pseudacorus and Louisiana irises results in hybrids with a wide array of characteristics. These hybrids may exhibit a range of colors, including yellow (inherited from I. pseudacorus), blues, purples, pinks, reds, and whites (more common in Louisiana irises). They are also less invasive.

     

     
  • Characteristics:

    The foliage of these hybrids is typically sword-shaped, similar to both parent species. The flowers can vary in size and form, often displaying the characteristic six petal-like segments of irises. 

     

     
  • Growing Conditions:

    Hybrids may inherit the preference for moist to wet soils from both parents. They often thrive in sunny locations but can tolerate partial shade. 

     

     
  • Considerations:

    While these hybrids can be beautiful garden additions, it's important to be aware of the potential for Iris pseudacorus to be invasive.