Antitranspirants are a range of chemicals and compounds applied to plant foliage aimed at lowering transpiration rates of plants under conditions that can lead to water stress. While antitranspirants have been widely tested in horticultural crops, there has been limited use in forestry applications. Where they have been tested, antitranspirants are reported to lower seedling transpiration rates under simulated stress conditions, but may lower growth rates and lead to death. There is limited evidence for cost effective in-field benefits of these products. Large scale commercial application in plantation forestry is therefore not recommended.