Next to Garden TS in Megchelen, the St. Martinus primary school is located, where 12 tons of Olivine in grades 2-6 have been scattered. This is the first school in the Netherlands to which GardenTS ​​has supplied greenSand olivine. In the garden is the first green sustainable outdoor classroom in the Netherlands, where lessons are given in good weather. In the outdoor classroom there are an insect box, a bat box and bird nest boxes. The garden is a design by Nico Wissing. He has used all "honest" materials in this garden, such as green oak, glass, pottery and olivine-rich rock. Olivine has a double effect, as a sustainable soil improver and cleans up CO2 in a natural way. The garden was opened by the well-known gardener Lodewijk Hoekstra.

See also the blog post on Nico Wissing's site