Posted: 14/03/2014 at 09:35
pH... can be confusing., and amusing.
Many years ago I went on a course on hair products. I asked the person running the course if the shampoo was pH balanced. This obviously totally confused her so she asked me if I knew what pH was. Quck answer.. pH is a measure of the potential Hydrogen ion concentration... (I have an A level in Chemistry). At this point everyone in the room turned round and stared at me. Slow answer... skin is around pH 5 , slightly acid. Preparations for the skin should be around the same. Alkali Ph 8 to 14 is more dangerous to skin than acid pH 1 to 5. Neutral is around pH 7.
End of Chemistry lesson, on to gardening...
Chalky soil is alkaline, good fertile loam is broadly neutral. Acid soil (less than pH6) often contains a lot of peat.
If you have neutral soil you can grow most things.
Alkaline soil good for buddlejas, brassicas (reduces clubroot).
Acid soil good for azaleas, rhododendrons, camellias, meconopsis.
So Mike, ignore the WUM and give us the definitive list.