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The purpose of this Standard is to document acceptable Canadian landscape construction practices as agreed upon by the CSLA, the CNLA, government authorities and other industry associations.

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Updated Version (June 2024) of the CLS is now available!

The Canadian Landscape Standard (CLS) Steering Committee is proud to release a revised edition (June 2024) of the Canadian Landscape Standard, a value of $100, free to CNLA members. This edition contains a new and revised Section 5—Growing Medium and several other updates.

The science of soils is a continually evolving subject, and the CLS is a living document that will endeavour to reflect this evolution. The CLS Committee commissioned Vineland Laboratories to develop a revised Section 5, and a national consultation followed. This is the result of Vineland Laboratories' work, your feedback, and the discussions of the CLS Committee.

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