All you need to do is feed your lawn iron sulphate the day after it has been raining, as the moisture will dissolve it.

For a 100-meter square patch, mix 60 to 250g of iron sulphate (variable based on conditions and soil pH) with 100 liters of water. To handle the solution easily, take a 10-liter watering can ...

We can use the reactivity series to predict what will happen when we add metals to solutions of metal compounds. Here we’ve got an iron nail and some copper sulfate solution. Copper sulfate is a ...