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in The potting shed
Hi Dutch Ellen.
I lived in Groningen for a year working at the hospital. Had a great time
What I use is horticultural grit which makes a good draining compost and sprinkled on top also aids drainage and stops moss or algae growing on the surface.
a very light grit not your road or gravel grit.
alpine grit is good but hard to find (around here anyway) I went to the pet shop part of the GC and got aquarium gravel. Comes in various grades and colours and is clean.
For some plants I do use road grit, that is the 7mm. limestone stuff. Only for lime loving plants of course. even that is hard to get hold of though, in smal bags.
That is cat litter??-would not think so
No, it tends to fall to pieces when it gets wet and clogs up the compost. The grit is to help drainage not keep moisture in.
I get my grit at garden centres but can also get from DIY stores and builders merchants
Hi Dutch-Ellen, try searching google.nl for "tuinbouw grind", which I think means 'horticultural gravel' in Dutch. Also "moraine grind". Look for a mix with quoted grain size mix of about 1 to 6mm (1/6) or 2 to 4mm (2/4) although you could get wide range mix (eg 0/8) and sieve (zeef?) it yourself.
I tried to get some earlier in the year from garden centres but everyone was out of stock so I ordered some Westland Horticultural Potting Grit from Amazon - it was £14.99 for 20kg including delivery - a bit pricey but when you take the delivery into account it seems ok. It'll last me ages.
It is very heavy tho' - I needed my OH to help me tip it into a small dustbin by the greenhouse.