"I have talked to renters in the area that have tenants that just have houses rented out that people are using for grow houses only, and he cant legally evict them."

Actually, that owner has every right to evict. By Federal law, providing a residence for the purpose of cultivating drugs is still illegal, and that house owner risks forfeiture of his property under Federal laws.

And there hasn't been a court YET that has dares to challenge that, 10th amendment not withstanding.