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which plant food is the better for outdoor shrubs/perreniels, one with an NPK of 4-7-4 or one of 10-10-10?



For general purpose, that is, to feed a wide range of plants, something like Growmore which has an NPK of 7-7-7 is pretty standard, so of the two you've mentioned, I'd go for the 10-10-10.

3 Mar, 2013



3 Mar, 2013


It depends on what your soil is like, Richie. If it is alkaline, a food proportionately lower in phosphate--the second number--is better. In acid soils, the opposite.

3 Mar, 2013


thanks again. the soil is sandy but not sure if it's acid or alkaline ...

4 Mar, 2013

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