The hexagon cells that make up each COREgravel panel form a rigid honeycomb design that holds gravel in place and supports load distribution. The underside is a geotextile allowing water to drain easily and prevents weed growth.
Echeveria 'Encantada' is a really nice hybrid from Renee at Altman Plants. Pupping rather nicely at 3 years in the garden. Not sure whether it will develop the steroidal size the single plant initially had about a foot in diameter. This also blooms over a 6 month period, and as a cut flower I keep the flower stalks in arrangements for another 4 months and they still look great.