We are installing a patio with 16" sandstone pavers in an offet pattern but are choosing not to put 1/2 stones on the shorter ends to make a straight edges. we want to plant succulents etc in these spaces. it is WELL built with very compacted crush & run and the pavers are set in granite dust. we have 1" wood spacers between the stones and will take those out and fill in with concrete making concrete spacers. The patio is on a slight grade and surrounded by a mix of good dirt and Georgia Clay.
We don't want to use the typical patio edgers to hold the form of the patio b/c we don't have a straight edge. any thoughts on reinforcing the placement of the patio to ward against heaving, shifting etc?