• Blue Flag Iris (Iris versicolor) with blue-violet flowers and sword-shaped green foliage growing in a moist garden setting.
  • Blue Flag Iris (Iris versicolor) with blue-violet flowers and sword-shaped green foliage growing in a moist garden setting.
  • Blue Flag Iris (Iris versicolor) with blue-violet flowers and sword-shaped green foliage growing in a moist garden setting.
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Eden Valley Seeds

Blue Flag Iris Seeds – Iris versicolor, Native Wetland Wildflower

Blue Flag Iris Seeds – Iris versicolor, Native Wetland Wildflower

€17,95 EUR
€17,95 EUR
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Taxes incluses. Frais d'expédition calculés à l'étape de paiement.
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Key Features

  • Native North American perennial with distinctive blue-violet flowers.

  • Elegant, sword-shaped green leaves create an attractive upright display.

  • Flowers feature delicate veining and yellow or white markings.

  • Naturally suited to rain gardens, pond edges, and moist garden beds.

  • Adds seasonal color and a naturalistic appearance to water gardens.

Growing Benefits

  • Supports native garden designs with graceful foliage and colorful blooms.

  • Creates a beautiful focal point near ponds and water features.

  • Offers a natural way to add vertical interest to moist landscapes.

  • Attracts pollinating insects when flowers are in bloom.

Seed Specifications

  • Common Name: Blue Flag Iris, Northern Blue Flag

  • Botanical Name: Iris versicolor

  • Plant Type: Herbaceous perennial wildflower

  • Colors: Blue, violet, purple, with yellow or white markings

  • Height: Usually around two to three feet

  • Sunlight: Full sun to partial shade

  • Soil: Moist, humus-rich soil

  • Water: Consistently moist to wet soil

  • Germination Time: Variable; may take several weeks or longer, depending on conditions and seed preparation

  • Sowing Depth: Surface sow or lightly cover with a thin layer of soil

  • Spacing: Allow approximately one to two feet between established plants

  • Growing Zones: USDA zones three through nine

  • Flowering/Maturity: Flowers in late spring to early summer; plants mature over several growing seasons from seed

  • Uses: Rain gardens, pond margins, wetland gardens, native plantings, and ornamental landscapes

Growing Tips

  • Choose a consistently moist planting site, preferably near a pond or rain garden.

  • Prepare seeds according to their dormancy requirements before sowing.

  • Keep the soil evenly moist throughout germination and early growth.

  • Protect young seedlings from drying winds and excessive heat.

Seed Storage

Store unused seeds in a clearly labeled, airtight container in a cool, dry, dark location. Keep them away from moisture and direct sunlight. Follow any specific storage instructions provided with your seed packet.

Unique Facts About Blue Flag Iris Seeds

  • Blue Flag Iris is native to eastern and central North America, where it naturally grows in wetlands and along water margins.

  • Its scientific name, Iris versicolor, refers to the varied colors of its flowers.

  • The plant grows from thick underground rhizomes, which help it spread into attractive clumps.

  • Seeds have dormancy requirements, so germination can be slow or irregular without suitable preparation.

Growing Instructions

Planting Season

Sow seeds in autumn outdoors or start them indoors when you can provide the necessary cold-moist conditions. Autumn sowing allows natural seasonal conditions to help prepare seeds for germination.

Sowing and Seed Preparation

Blue Flag Iris seeds may have dormancy that delays germination. Follow the seed supplier's instructions for any required soaking or cold-moist stratification. Sow seeds in moist seed-starting mix and cover them lightly with soil. Avoid burying them deeply.

Spacing

Sow seeds with enough room for seedlings to develop. Once established, transplant young plants with approximately one to two feet between them to allow space for mature clumps.

Sunlight and Soil

Choose a location with full sun to partial shade. Plants flower best with sufficient sunlight but can tolerate some shade. Use moist, humus-rich soil that retains water without becoming stagnant.

Watering

Keep the soil consistently moist during germination and throughout the growing season. Blue Flag Iris naturally grows in wet conditions and is well suited to pond margins and rain gardens. Do not allow young seedlings to dry out.

Germination

Germination can be slow and uneven because seeds may require a period of cold, moist conditions. Keep the growing medium moist and provide patience while seedlings emerge.

Transplanting

Transplant seedlings when they are large enough to handle and have developed several true leaves. Move them carefully into moist soil, keeping the roots intact. Water thoroughly after planting.

Fertilizing

Use a light application of compost or a balanced, slow-release fertilizer if the soil is poor. Avoid excessive fertilizer, particularly near ponds or other water features.

Care and Flowering

Remove damaged foliage as needed and keep the planting area free of competing weeds. Established plants form spreading clumps over time. Blue Flag Iris generally flowers in late spring to early summer, with flowering depending on local climate and growing conditions.