Would sulphate of potash be okay to sprinkle round my tomatoes as a fertiliser or would it be detrimental. If so in what way?
Yes! It is one of the best forms of potash there is!
Spread at ½ - 1 oz per square yard
Tee Gee: How often would I use it and could it be used as an altrnative to those expensive tomato fertilizers? Thanks for your help
You can use it as a liquid feed at 1oz to 2gallons of water!
Use it like any other tomato feed which I think is once a week although I know of people who when feeding plants, feed at half strength every feed.
The choice is yours!
1oz = 5x flat teaspoons or thereabouts BTW.....