more... > Red River > Research > Horticulture > Reusing Perlite to Grow Greenhouse Tomatoes Sifting and disinfecting used perlite is a simple technique developed at the LSU AgCenter Red River Research Station to recycle perlite for repeat use as a growing media. The recycled perlite was used for 10 years so far with no negative impact on tomato yield. Bumblebee Pollination of Small Greenhouse Tomato Operations Bumblebee pollination of small greenhouse tomato operations may not be the best option, but simple changes made a difference. Greenhouse Tomato Production Manual [Image: Tomatoes] This manual is intended to help small greenhouse tomato growers in Louisiana and elsewhere grow a successful crop using perlite or pine bark medium. Small growers can produce vine-ripened, high-quality fruit that can be delivered to the local market on the same day of harvest.