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Blue Flag Iris Seeds

$3.95
per Packet
Shipping:
Most orders ship within 48 hours or less. Learn More…

The magnificent "wild blue iris" you see in wet meadows & along streams all over the northeast & upper midwest. Perennial

Zones 3 - 8
Light Requirements
Full Sun
Full Sun
Half Sun / Half Shade
Half Sun / Half Shade
Mature Plant Size 24-36 inches tall
Bloom Time Late spring
Size Packet
SKU IRVP
"Blue Flag" is a real beauty, with classic violet-blue iris blooms on stalks growing from 2 to 3 feet. The flowers are up to 4" across, making it very showy for a wildflower. It's native from Canada down to Virginia, and west to Minnesota--in fact, sometimes whole wet meadows are covered with this late spring beauty, creating a spectacular sheet of shining blue. Blue Flag can be successfully grown wherever there is a strong winter freeze.

This treasured iris is not invasive in watery areas like its cousin, "Yellow Flag," so it's a perfect wildflower garden plant--as long as you have a wet spot in sun or shade.

A similar, but shorter species occurs farther south and is called "Southern Blue Flag."

As with all irises, growing them from seed is not difficult, but may take some time. The plant must create its bulky roots before it can bloom.

SKU IRVP
Common Name Blue Flag Iris
Botanical Name Iris versicolor
Seed Life Cycle Perennials
Light Requirements Full Sun, Half Sun / Half Shade
Flower Color Purple
Mature Height 24-36 inches tall
Bloom Time Late spring
Ships As Seed
Seeds Per Pound 20800
Seeds Per Packet 15
Soil Moisture Average, Moist/Wet
Soil Type Sandy Soil, Loamy Soil, Clay Soil, Acidic Soil, Moist/Wet Soil
Native To North America
Native To Northeastern North America
Ideal Region Northeast, Southeast, Midwest, Southwest, West, Pacific Northwest
Zones 3, 4, 5, 6, 7, 8
Is It Storable? Yes- You can store your seed in any cool (not freezing) dry place that is not subject to extreme temperature variations.
Neonicotinoid-Free Yes - Learn More
Ships to Hawaii, Alaska & Canada Yes

Most orders ship within 48 hours or less.

As soon as your order is placed you will receive a confirmation email. You will receive a second email the day your order ships telling you how it has been sent. Orders for in-season products ship within 5 business days. Depending upon your order date, we may hold your shipment to combine it with other products on your order, if applicable. See our shipping information page for approximate ship dates and more detailed information. If you need express shipping or have any questions, please call Customer Service toll-free at (877) 309-7333 or contact us by email.

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USDA Hardiness Planting Zones

To determine if a plant is sufficiently cold hardy, the USDA created numbered zones indicating winter low temperatures; the lower the zone number the colder the winter.

  • If the coldest winter temperature expected in your area is -15°F (zone 5) then any plants rated zones 3-5 will survive the winter temperatures in your area.
  • If you live in very warm winter areas (zones 9-11) plants with zones 3-4 ratings are not recommended. The lack of freezing winter temperatures do not provide a time for winter dormancy (rest).

Find Your Planting Zone:

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