'Crocking' is when stones, gravel or pieces of broken pots are placed over the the drainage holes in the bottom of pots to prevent the compost falling out. I try to fit crocks neatly for stoloniferous plants to prevent them escaping from the pot. (However I use a lot of porous clay pots which are not nesescarily suitable for all conditions). Contrary to popular opinion crocking may interupt drainage if there is no route through the crocks for water. - see my last post. An alternative to crocks, which may also stop worms and some other creatures entering the pots, is to use a piece of fine mesh such as sold for wind protection by garden centres. Peter (UK) On Sun, May 20, 2012 at 12:10 PM, Shoal Creek Succulents < group@shoalcreeksucculents.com> wrote: > Thanks Peter. This was helpful. What is 'crocking'? I don't understand > that term. > <pbs-bounces@lists.ibiblio.org> >