Seedling tray assembly and greenhouse

Selectively closed modular cultivation apparatus

Shade producing system

Solar energy collector

Solar greenhouse

Solar greenhouse for growing plants

Solar heated building designs for cloudy winters

Solar structure

Special locking clip with apparatus for carrying plural plants t

Structure of a greenhouse

System for and method of benefiting the growth conditions...

System for conditioning crops

System for conveying plant trays in a greenhouse

Thermally efficient integrated greenhouse system

Utilization of exhaust gases for plant growth

Weather responsive insulation system for greenhouses and the lik

Wheel-about greenhouse