Abstract: A film-forming anti-transpirant concentrate for plants selectively constituted of a homogeneous intermixture of emulsifiable oxidized polyethylenes having molecular weights in the range of from about 1000 to about 3400 and selectively constituted polyterpenes having molecular weights in the range of from about 270 to about 1800 for dilutable ambient temperature controllable application to plants to form long lived protective films of determinable thickness on the surface thereof.