By Vindiboy63
United Kingdom 
I'm making a rockery. Is it ok to use the leftover bag of sharp sand I bought at the builders merchants or do I need to buy a new bag of horticultural grade sharp sand from my local garden centre?
6 Sep, 2012
Answers
As its sharp sand you mention this will be fine .
6 Sep, 2012
Many thanks for your advice; will get the horticultural grit as you suggest.
6 Sep, 2012
In that case mix them together and put them both in!
6 Sep, 2012
Good one tg !, i agree with steragram not to use building sand as it holds moisture but it was sharp sand that was queeried!.
7 Sep, 2012
I get my sharp sand from the local builders merchant and never had a problem with it. If Vindiboy is talking about less than a bagfull, even if it may have some salt, it will easily be absorbed within the soil of a rockery.
7 Sep, 2012
I hadn't noticed that it was sharp sand that was mentioned - thought all builders sand was the fine stuff. But it would still be a good idea to mix some grit with it don't you think?
7 Sep, 2012
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No, don't use builders sand, it is too fine and may be salty. You would be better buying some fairly small horticultural grit.
6 Sep, 2012