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www.almanac.com/plant/irises

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 ...

homeguides.sfgate.com/plant-iris-bulbs-49517.html

Iris bulb planting times vary with climate and variety but typically, for spring blooming ... However, they may not root deeply or bloom until the following year.

www.americanmeadows.com/about-bulbs-in-fall

A quick guide to growing all the Irises: The big Bearded Irises you plant in late ... It also relates wildflower planting to fall bulb planting time--sometimes doing ... They brighten the garden in spring, multiply year after year, and are resistant to ...

www.hgtv.com/design/outdoor-design/landscaping-and-hardscaping/qa-when-is-it-too-late-to-plant-bulbs

If you miss the optimum planting time for spring-flowering bulbs, go ahead and ... Every year stories abound of bulbs that bloom after being planted under the ...

www.irises.org/About_Irises/Cultural%20Information/Grow_Bearded.html

For best results, plant iris rhizomes in July, August or September. ... the roots of newly planted irises be well established before the end of the growing season.

www.bhg.com/gardening/flowers/perennials/how-to-grow-maintain-and-divide-bearded-iris

Bearded iris is among the most elegant -- and easy to grow -- flowers of spring. ... It's a magical time when bearded irises unfurl their pencil-slim buds to reveal a ... a year -- in early spring and just after bloom when the rhizomes are forming the ...

www.wikihow.com/Grow-Iris

As the plant's roots establish themselves throughout the late summer ... can occur during very cold weather and dislodge the rhizomes. ... of fertilizer starting the growing season after you plant it.

www.easytogrowbulbs.com/pages/dutch-iris-planting-guide

Dig holes and plant the irises 4" deep and 3" apart. The bulbs ... After blooming has finished for the season leave the foliage in place; don't cut it off. The leaves ...

greenlifeinsocal.com/2009/11/19/fall-is-the-time-to-plant-iris

Nov 19, 2009 ... Here in southern California, we plant iris rhizomes from October through December ... They require about 30 inches of rain a year–we get 15.