Inadequate sunshine, insufficient watering and overcrowding can cause a bearded iris to lack flowers. In addition, being planted too deep or getting too much nitrogen will prevent flower growth.Know More
Most bearded irises prefer full sun. Tree branches and other surrounding vegetation can shade the iris. Cut back foliage to allow light to penetrate to the flower. Some varieties do well with at least half a day of sunshine.
Though these plants are considered to be drought tolerant, the first part of the iris to be sacrificed when water is lacking is the flower. Wait until the top 2 inches of the soil are dry to irrigate, as watering too much can cause root rot.
If a bearded iris is overcrowded, dig up the bulbs and reset them with more space between the plants. Cut back the foliage to about 6 inches before dividing them to make removal easier. Water the plants frequently while they become established.
When planting a bearded iris, the top of the rhizome should just break the surface of the earth. This allows air to circulate around the rhizome and ensures that the plant does not become too moist.
A balance of nutrients is best for the iris. To encourage blooming, apply a 10-55-10 fertilizer in the spring.Learn more about Outdoor Plants & Flowers
A successful method of dividing irises is to dig up the iris clumps with a spade or garden fork, gently lifting and shaking each clump to remove excess soil. All leafless, soft and rotting tubers are discarded, and the remaining young, healthy rhizomes are replanted. For best results, divide bearded iris in late summer after the iris have bloomed but while soil temperatures are still warm enough to promote root growth in the rhizomes.Full Answer >
Garden Guides advises gardeners to fertilize a reblooming iris with a 6-10-10 mixture, after the first bloom. Prune the iris between blooms, cutting the stalks all the way to the base. Do not remove the leaves. Divide the iris every three to four years.Full Answer >
Care for a dwarf lake iris by planting it in a good location, watering, mulching, fertilizing and pruning. You need well-drained soil, a garden fork, water, mulch or compost, fertilizer and pruning shears.Full Answer >
Plant an iris by choosing a location with full or partial sun, planting during the summer, using well-drained sandy or loamy soil, and fertilizing it as needed. Make sure that the plant's rhizome is partially exposed during planting.Full Answer >