barbie gee wrote:

I picked up a large bag of "garden soil" and only now see that it's
"acidy", for use around shrubs and the like.

If I want to use it as a potting soil, how can I de-acidify it?

If you are potting flowering plants, DO NOTHING! Most flowering
plants prefer an acidic soil. Exceptions include dianthus,
primula, and cactus.

--
David E. Ross
Climate: California Mediterranean
Sunset Zone: 19 -- interior Santa Monica Mountains with some ocean
influence (USDA 10a)
Gardening pages at http://www.rossde.com/garden/