Black Form Iris
Spring Planting: this product will be shipped late April through May according to your hardiness zone.
Iris chrysographes. Striking, graceful and velvety flowers are the blackest violet-purple you can imagine. Adds a contemporary, interesting air to any setting. Plant these water-loving plants in a sunny, boggy area or near water. Height 24-30". No. 1 root.
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Details
Growing Information
Planting Perennial Roots:
It is a good idea to soak any bare-root perennials in water for a few hours, but not more than a day, before planting. Add organic matter to the area and provide good drainage unless the plant variety enjoys wet roots. Unless otherwise specified, bare-root perennials are usually planted with the crown (where the shoots meet the roots) an inch below the soil surface. Firm soil gently to eliminate air pockets and water in well. Mark the area clearly since it may be awhile before the plant shows itself.
Planting:
Irises need at least half a day of sun and well-drained soil. Without enough sun, they won’t bloom. They prefer fertile, neutral to slightly acidic soil. If your soil is very acidic, sweeten it with a bit of lime, and forbear summer watering, which can lead to rot.
Plant rhizomes singly or in groups of three with the fans outermost, 1 to 2 feet apart, depending on the size. Dig a shallow hole 10 inches in diameter and 4 inches deep. Make a ridge of soil down the middle and place the rhizome on the ridge, spreading roots down both sides. Fill the hole with soil and firm it gently.
Growing:
Grow in full sun and well-drained soil. They form large clumps and live for many years. Most require dry soil during the summer in order to bloom reliably in following years.
After 2 to 5 years, when clumps become congested or lose vitality and stop blooming, divide and replant sound rhizomes in fresh soil. The best time to replant irises is soon after bloom.