To make
CBD oil with minimal THC, it's important to harvest the plants at the right time. Waiting for all the trichomes to go completely amber is not necessarily the best indicator of when to harvest, as the level of THC in the plants can still be relatively high at this point. Instead, you should be looking for the ratio of THC to CBD in the plants. Generally, plants that are high in CBD and low in THC are harvested earlier than plants that are high in THC.
One way to make sure you're getting the right ratio of CBD to THC is to test the plants before harvesting them. This can be done using a testing kit or by sending a sample to a lab. Once you know the ratio of CBD to THC, you can make an informed decision about when to harvest the plants.
If you want to make CBD oil with little to no THC, you can use a high-CBD strain and harvest the plants early. You can also use a method called
winterization, which involves soaking the plant material in ethanol to extract the cannabinoids, and then filtering out the unwanted compounds, including THC. This can be an effective way to create a CBD oil that is low in THC.
However, it's important to note that even if you harvest early or use winterization, there may still be trace amounts of THC in the CBD oil. If your friend needs a CBD oil with absolutely no THC, you may want to consider buying a commercially available product that is specifically labeled as THC-free.
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