Red volcanic sand usage

R Hansen via pbs pbs@lists.pacificbulbsociety.net
Fri, 05 Feb 2021 11:29:33 PST
Re: fines in red cinders or white pumice. I agree that the fines are very important, particularly since they're not graded. I use 1/4 10 gravel, with fines, and find that when this is mixed into my container mix, it does not pack and my plants grow much better. The biggest issue for me is simply that it's heavier than red cinders or white pumice. Try picking up a standard Anderson flat that's full of newly potted plants using 1/4 10 and you'll know one of two things: you need to start lifting weights to strengthen your muscles or you need to change to pumice...

Robin Hansen
Sunshine in Coquille!


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