In this agribusiness lesson, the instructor discusses different growing media including soil, peat, compost, vermiculite, perlite, and horticultural sand for plant cultivation. The lesson emphasizes the importance of testing soil for deficiencies, using additives like mulch and organic matter to enhance soil quality, and selecting appropriate substrates for different plant types, including rockwool for seedlings and cocopit for orchids. Additional guidance is provided on using materials like vermiculite and perlite to improve water drainage and soil aeration for various plants, including ornamentals and succulents.