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Azalea chlorotic
On Fri, 20 Jul 2007 16:53:55 -0400, Stephen Henning
wrote: Persephone wrote: The soil in this area is adobe (basic), but the people before me mulched regularly, as have I, so I suspectthat over many decades of modification the PH has become either acidic, or at least neutral. I should have it tested some time just out of curiousity, though I don't usually have problems like this. Neutral won't work. It must be acidic. A pH of 5 to 6.5 is necessary. I already have some Miracle-Gro; it probably won't kill the plant to get a moderate application. Miracle-Gro does more harm than good. It is a soluble nitrogen fertilizer. Your plant is stressed and feeding it nitrogen is not a wise move. The iron and sulfur are the right approach. Usually in alkaline soil such as yours the only easy way to grow azaleas is in a raised bed. What about a large pot where soil can be modified? Then the alkalinity of the surrounding soil doesn't affect the azaleas. The raised bed only needs to be 8" to 12" high. Then use a good acidic garden soil. If you want to raise acid loving plants like azaleas, you will have to meet them half way by providing acidic soil. OK, suggestions assimilated. I have had azaleas in that large pot on the E. side of the house before; they bloomed magnificently, but it's true they only produced for about 3-4 seasons. I'll get some sulfur and see if it will work with the previously applied iron. Persephone |
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