Stagger the overlaps (at least 4 in. for this Versa-Lok product) and try to keep the butt joint between the retaining wall blocks as tight as possible. Large gaps can create a pathway for water ...

Plus, if your retaining wall is made from large rocks and there are crevices ... The 11 Most Difficult Vegetables To Grow In Your Garden This tall block retaining wall would be ideal to grow ...