By Ewheeler
United Kingdom 
How do you make regular potting compost into light compost?
20 Aug, 2017
Previous question
« Good evening all, I'm wondering what this is, as I don't remember planting...
By mixing in perlite and/or vermiculite, usually. Brands of potting compost containing silt or fine sand resist lightening, though.
20 Aug, 2017