On Thu, 29 Sep 2011 17:50:07 +0100, "john east"
wrote:
Have some hibiscus to put in larger pots on a south facing window.
John Innes No3, and some general purpose compost, and sharp sand I have got
and are all ready to be mixed up.
Since I having 'deepish' saucers under the pots, what *ratio* of these three
components would you mix up; with a view to minimize the watering, but also
keep the plants happy?
To be honest, I find sharp sand is useless when mixed with JI3. I've
tried coarse grit but have found that mixing a 5 litre bag of Perlite
with a 20 litre bag of JI3 provides decent drainage without the weight
in pots. I don't mix multipurpose in as I think it's
counter-productive.
Cheers, Jake
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