Greenhouse structures built your way!

We design, engineer, manufacture, and install commercial greenhouses. Formerly known as Nexus Greenhouses, Rough Brothers, Inc. and ThermoEngergy Solutions, we are the largest manufacturer in North America. We have thousands of acres of projects under our belt and have in-house engineering and design capabilities to meet every need. From custom greenhouses, to standard sizes, we do it all, from design to install. Prospiant is your end-to-end partner, collectively built by three industry-leading brands with unmatched financial strength and more than 150 years of combined business success.