Rhododendron Plants
Q.

Rhododendrons, Irises Not Blooming

Anonymous added on November 6, 2010 | Answered

Strangely, both our irises and rhododendrons did not flower this year. Any suggestions?

A.
A.Answers to this queston: Add Answer
Heather
Certified GKH Gardening Expert
Answered on November 7, 2010

Since these are two very different plants that did not bloom, I suspect that you have an issue with phosphorus in your soil. Plants need phosphorus to bloom. Here is more information on that:
https://www.gardeningknowhow.com/garden-how-to/soil-fertilizers/phosphorus-plant-growth.htm

Have your soil tested to determine what is causing the phosphorus deficiency. You can also add bone meal (https://www.gardeningknowhow.com/garden-how-to/soil-fertilizers/bone-meal-fertilizer.htm) to the soil to add phosphorus.

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