Great Southern has a large range of garden edging available and landscaping products. 200 x 100 Macrocarpa Sleepers . 150 x 40 H4 V Joint T & G. 200 x 50 H4 Rougher Head T & G. Great Southern has a range of H4 ground treated and untreated timbers available for garden edging, planter boxes, retainer walls and boxing. A range of 50 x 40 pegs and 50 x 50 stakes available in store.