Rhododendrons

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The above picture is of my red rhododendron.  About two years ago I trimmed it way back and it came back strong and healthy the next year, however this year it seems to have a problem.  The leaves have a spotted yellow color instead of the nice solid green.  Does anyone else have this issue with rhododendrons?   My rhododendron shrubs are all older plants, yet I’ve always heard they can live super long if they have proper fertilization and care.

The whole bush is blooming strong with really nice large flowers, but it just looks unhealthy to me.  If there is an organic fertilizer that is better for this type of flower please let me know in the comments. 🙂

I would love to have students enjoy the flowers disease free if possible. 🙂

 

 

Thank you so much I appreciate any advice on this subject! 🙂

Heidi, The Marigold School of Early Learning