Article: DON'T PLANT IRIS RHIZOMES TOO DEEPLY.(GRACIOUS LIVING)

JIM LEIFER, who grows a lot of irises near St. John, Wash., writes in Country Living Gardener: ``The biggest mistake many first-time growers make is planting iris rhizomes too deep and overwatering them.'' For the first two years after planting irises, he says, water them judiciously during periods of drought. Thereafter, let nature do the work. Plant iris rhizomes out of range of automatic sprinkler systems. Too much moisture leads to fungal diseases and leaf spot, along with iris borers.

Leifer also says to fertilize sparingly, using only compost in the planting hole. After that, use a high phosphorus (13-32-6) fertilizer once a year. When flowers are ...

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