Why Are My Irises ... to bloom. If this is the case, try dividing the irises this coming summer. Keep in mind that recently divided and transplanted irises may not flower for a year or two after ...

"After chilling, dwarf irises will flower after a few weeks once brought into warmer conditions," Allen says. "When blooming ...

Or, use a balanced NPK fertilizer like 10-10-10 for a light application in early spring and then again about a month after the plant stops blooming. When fertilizing a bearded iris, apply the ...