Bart Thomas(deceased)

I'm with Jeff on this. Check to see if you really need it.

Here on the East Coast of the US, we sometimes spread a little lime (maybe a teaspoon) on top of the soil of our junipers. It seems to green them up nicely.

It is speculated that this is made necessary by the acidity of our rain.

I recall seeing a research report that indicated that potted plants were less sensitive to moderate changes in pH. Don't recall why.