Yellowing trachy leaves

[Kyle Vancouver BC]

I was informed that ephsom salt was good to add to trachy plants that have yellow leaves from the winter. However, I wasn't told how much of the salt to use and how often to use it. anyone??

[Wes North Van]

Kyle,
I am experimenting with it for the first time also. I have a 16' trachy and 9' that i put two handfuls in a litre of water and poured it around the base. I also have a smaller one that I only used one handful. I do not see the results yet. Perhaps I need to also use a 20-20-20 all purpose fertilizer with it.
By the way my chamaerops humilis is still as green as ever. It was my trachies that yellowed. Interesting!