EASIHOLD ROCKS - 3L Resin Gravel Glue with Applicator for Bonding Stones, Bark and Gravel on Borders, Patios and Garden Paths. Lasts up to 3 Years, Non Toxic. : Amazon.co.uk: Garden
Titebond PROvantage Landscape 12-Pack Off-white Polymer-based Exterior Construction Adhesive (28-fl oz) in the Construction Adhesive department at Lowes.com
Epic Hardscape Glue - EpicAquatics
JBL Pro Haru Universal Adhesive - Hardscape Glue
How to Glue Rocks Together for Landscaping?
Structure Bond Adhesive for Hardscape Construction | Techniseal