Native Plant of the Week: Blue Flag Iris

Updated: Mar 8

Family: Iridaceae


Name: Iris versicolor - Blue Flag Iris


Bloom Time: June


Flowers: Purple, Lavender, Violet


Soil Condition: Average-wet, acidic, rich


Light: Sun to Partial Shade


Height: 24-36" tall by 24-36" wide


Native Range: Northeastern North America including Long Island


Zone: 2 to 7


Iris versicolor is a true low maintenance plant and can handle average garden soil as well as being submerged in a pond. Rhizomes are toxic and may cause a rash if touched without gloves. Blue Flag Iris spreads by seeds and rhizomes. A great plant for revegetating along streams and ponds as it filters excess nutrients to improve the water quality.


Maintenance: After the fall frost the foliage may be cut back to about 1" above the crown, watch for Iris borer and rhizome rot.


Benefits: pollinators including hummingbirds and bumble bees, birds will eat the seeds, deer and rabbit resistant


Companion Plants: Rhexia virginica - Meadow Sweet, Asclepias incarnata - Swamp Milkweed, Eupatorium perfoliatum - Boneset, Lythrum alatum - Winged Loosestrife, Symphyothricum novae-angliae - New England Aster, Carex brevior - Short-beaked Sedge


pics: KMS Native Plants LLC

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References:

1. https://www.missouribotanicalgarden.org/PlantFinder/PlantFinderDetails.aspx?taxonid=281141

2. https://www.wildflower.org/plants/result.php?id_plant=irve2

3. http://www.newmoonnursery.com/plant/Iris-versicolor

#NativePlants #PollinatorPlants #IndigenousPlants #Gardeningwithnativeplants

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