Build Decorative Tree Surround

What happens here

Level the base around the tree where the retaining wall will be constructed, using a shovel to create a shallow, stable trench. Spread paver sand evenly in this trench and tamp it down firmly to create a level and compacted base for the first course of blocks. Carefully lay the first course of retaining wall blocks directly on the prepared sand base, ensuring they are level using a spirit level. For a curved design, it may be necessary to 'chip off' the back ledges of certain blocks (using an angle grinder for the main cut and a hammer/chisel for the final break) to allow them to sit flush and create the curve. Stagger the blocks for each subsequent course (offsetting them by 50% from the blocks below) to create a strong, interlocking pattern. Apply heavy-duty construction adhesive specifically designed for concrete to the top surface of each block before placing the next course, ensuring permanent adhesion. Continue stacking courses until the desired height is reached (e.g., two tiers). Regularly check the level of each course and tap blocks into place with a rubber mallet if needed. Once the wall is complete, backfill the interior with soil and cover with weed barrier fabric, then top with decorative rock or bark.

Goal: Construct a two-tier decorative retaining wall around the base of the main tree, using concrete blocks, paver sand, and construction adhesive for stability and aesthetics.