Posted: 29/11/2014 at 14:41
Wouldn't add sulphur or anything there marksman. My ph is around 7 which is perfect for most veg including onions. Garden compost mulching will help levels too.
I once treated a raised bed to flowers of sulphur to grow summer heathers, pieris, azaleas etc. fine for a while but top up applications were needed. Sulphur Over dosing? Not sure if it's wise in veg patch