Rhododendron Leaves Turn Yellow?

Answer

With like any other plant, sometimes the leaves of a Rhododendron plant can turn yellow. Rhododendron plants are typically a pest free plant so when their leaves start to turn yellow it is often a sign of the plant having an iron deficiency. This is referred to as chlorosis. If the plants soil is does not contain enough acid, usually with a pH of the soil being greater than 5.5 this will cause the leaves to turn yellow. It is easily cured by spraying the leaves of the plant with an iron solution.
Q&A Related to "Rhododendron Leaves Turn Yellow?"
I think it's a deficiency of nitrates, which help plants to produce chlorophyll, and which is the pigment that turns leaves green, and without it, leaves can become yellow.
http://wiki.answers.com/Q/What_causes_yellowing_le...
Not all rhododendrons are the same. Certain cultivars, or strains, have inherently spotted leaves even when perfectly healthy. These spots are a faint purple, not rusty red or dull
http://www.ehow.com/about_6746763_rhododendron-lea...
This is called Chlorosis and it means the green chlorophyll is not present. All you are seeing is the other leaf pigments that are normally not noticable because they are masked
http://www.quora.com/Gardening/Why-do-the-leaves-o...
The chlorophyll mostly made with magnesium is gone, due to lack of sunlight making no food nor energy for the plant to create more. In the room though its just a lack of water to
http://wiki.answers.com/Q/You+leave+a+green+leaf+i...
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