Can you apply Sulphate of Potash to the leaves of plants or just on the soil
And if it can be used in liquid form for spraying, what level of concentrate should I use?
The product is not registered to be used as a foliar spray. It can be applied in a dry form at the rate of 10 grams per square metre and watered in well or as a soluble form dissolving 20 grams in 9 litres of water and applied over 2 square metres.
Answered: 7 Jun, 2013