Will silane-based water repellents harm plants, bushes and trees?
Protectosil® CHEM-TRETE® and Protectosil® AQUA-TRETE® products are not toxic to plants. However, the alcohol solvent in some products may dry out the leaves of some plants, leaving brown spots where the product contacted the vegetation (no damage to roots is caused). It is therefore recommended to protect landscaping with plastic during application.