Rhody problem - Ask Extension
What can I do for this creek side rhody. I tried iron, magnesium, blood meal and heavy pruning. It is on a hill creek side. The rhody right next to - ...
Knowledgebase
Rhody problem #726606
Asked September 24, 2020, 2:02 PM EDT
What can I do for this creek side rhody. I tried iron, magnesium, blood meal and heavy pruning. It is on a hill creek side. The rhody right next to - 3rd picture is healthier but barely
Multnomah County Oregon
Expert Response
Thank you for your question. Your rhododendrons need a balanced fertilizer, containing nitrogen, phosphorus and potassium. That is what is causing the yellowing (chlorosis). This publication explains the care of rhodies in our region: https://catalog.extension.oregonstate.edu/fs12
But, you also should have a soil test to see if the soil is acidic enough. You can find a list of labs in this publication: https://catalog.extension.oregonstate.edu/em8677
Good luck!
But, you also should have a soil test to see if the soil is acidic enough. You can find a list of labs in this publication: https://catalog.extension.oregonstate.edu/em8677
Good luck!
