I hope this is the right place to ask.
I am going to prepare some raised beds out in the garden (probably a few layers of old bricks around for walls) and I want to mix something in the soil to make it more alpine-like.
Problem is, I don't know what.
I know the English words, but I have no idea what exactly I can find around here.
Best is granite?
What size?
Can someone have a look at this site and suggest something?
Probably for mixing in the soil a size is good, and for "topping" another one?
I am gonna have a huge collection of Sempervivums (judging by the millions of seedlings I have now) and hopefully some Saxifraga and Sedum and Androsace and a few more.
And, what would be the approx. ratio? half garden soil and half such gravel/grit? Or it's too much grit?
Also... underneath the 20-30 cm of depth, should I put some kind of cloth, fabric to suppress any weeds?
OK. Here's one of the sites I found.
http://www.afacerist.ro/catalo...
As a note, they say this stuff is used for ASPHALT?
