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Planting Instructions for Iris foetidissima (Gladwyn or stinking iris):

Bloom Time:  Summer with attractive seed pods in fall Light:  Part sun to full (dappled) shade
Soil:  Average to rich, moist but well-drained Moisture:  Average to slightly moist though drought tolerant
Planting Depth:  Top of crown/base of foliage 1" below soil, mulch 1" Spacing:  15 to 18"

Upon arrival:  Unpack box and check that you have everything on your packing list. Iris foetidissima likes to be slightly dry when dormant, but some moisture in the bag is okay too. Plant everything within a few days.

Soil/Location:  Plant your stinking iris at the edge of the shady to semi-shady garden in average to rich, moist but well-draining soil. They especially enjoy areas with consistent moisture but are very adaptable and even drought tolerant once established.

Moisture:  Iris foetidissima doesn't like to dry out too much but are drought tolerant once established. Keep them evenly moist when possible, watering them deeply two or three times a week until they are established but allowing them to dry slightly between watering.

Spacing: 15 to 18" apart

Depth:  New roots sprout from the base of the foliage so make sure the top of the crown/base of the foliage is completely buried about 1" deep and then mulch them about 1" after planting to help keep them cool and moist.

General Instructions:  Amend your garden with compost or peat humus to enrich or loosen the soil. Iris foetidissima grows fine in just about any good, well-draining soil, but by giving them some good compost will help them grow and multiply better. Mix a couple teaspoons of garden food or bone meal into the planting hole and plant at the depth listed above. After planting you can water in once really good and then they shouldn't need to be watered again until after they are sprouted and actively growing. Once growing water deeply one or two times a week, if needed, until they are established.

Landscape Uses:  Iris foetidissima provides a wonder accent in the shade garden, adding interesting flowers, attractive seed heads, and providing year round, evergreen foliage. Plant it with hostas, ferns, and other shade loving plant, preferably near the border where you can enjoy the subtle flowers better. Note: The common name refers to the smell you get when you crush the leaves or rhizomes. The flower themselves are actually slightly fragrant.

 
 
Hallson Gardens
PO Box 220
Brooklyn, MI 49230
517-592-9450

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