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bendipa

By Bendipa

Surrey, United Kingdom

Ferrous Sulphate question.

I've just bought a packet of ferrous sulphate with instructions as to how to apply it as a moss killer. I also want to apply it to the base of a rhododendron, whose leaves have been looking a bit yellowish for the past 2 years (to reduce soil pH), but not sure what dilution rate should be used there. Does anyone have experience using the chemical in this case?



  • Question asked on 9 Mar, 2016

Answers

derekm
Derekm
 

Hi, it is rather a complicated question, as there are so many variables, have a look at https://www.rhs.org.uk/advice/profile?PID=82
Derek.

9 Mar, 2016

loosestrife2
Loosestrife2
 

Have you tested the soil first so you have some numbers to work with when you dilute? In any case, whatever recommendation is made do one half of that. It's better to undershoot than overshoot in this situation.

9 Mar, 2016

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