Using selective medium, such as Trichoderma Selective Agar (TSA) or Potato Dextrose Agar (PDA) modified with antibiotics to inhibit the growth of other fungi and bacteria, is the standard procedure for isolating Trichoderma in a laboratory. The suspected Trichoderma-containing soil or substrate sample is plated onto the selective media and cultured for a few days at a suitable temperature (typically between 25 and 30°C). The distinctive morphology of trichoderma colonies, which includes their quick growth, white to greenish colour, and conidia (spore) generation, can subsequently be used to identify them. For confirmation, molecular methods such as PCR can be employed.