Iris Plants

Bearded Iris Blooming Poorly

robert rolanti added on May 17, 2012 | Answered

I divided them several years ago and they do not appear to be overcrowded. I planted them shallow so the tubers are showing to prevent rot. I have used a modest quantity of lime in the soil. They seem to have excellent leaf growth and size. They are mature. Any ideas on why they are relatively unproductive bloomers?

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Certified GKH Gardening Expert
Answered on May 18, 2012

Use a fertilizer higher in phosphorus or even a phosphorus only amendment, like bone meal, to get them to bloom. This article will help you:

In addition, it can be attributed to poor pollination. Try to entice pollinators (bees, butterflies, etc.) to the area with brightly colored flowers.

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