Most fertiliser brands provide their customers with feed charts. Understanding these charts is the key to providing your plants with the right nutrients at the right time.

A feed chart will typically set out a -week growing cycle. The weeks of the cycle will usually be listed along the x-axis of the chart, which might also include information like the photoperiod for each week and more.

Most importantly, your feed chart will outline what nutrients to give your best cannabis nutrients, in what ratio, during the different weeks of their life cycle. Nutrients are typically applied once a week, and most fertiliser brands will provide you with a ratio of feed to water (either in litres or gallons). Some feed charts might also provide you with an EC or PPM range for their solutions. If so, invest in an EC meter and measure your nutrients before feeding for extra accuracy.

Once you’ve fed your plants, it’s always a good idea to check the conductivity or/and PPM of your soil to ensure your plants are absorbing nutrients properly.

HOW TO PREPARE CANNABIS NUTRIENTS

A potential nutrient slip-up, after all, can completely thwart your harvest. But feeding your cannabis plants can be very straightforward. Just follow these steps:

Prepare your water. If possible, heat your water to about 19 – 21 °C to increase absorption by the roots.
Add your nutrients according to the instructions on your fertiliser, and stir. Use a PPM or EC meter to get exact readings.
If necessary, adjust the pH of your feed using a nitric or phosphoric acid pH down supplement.
Once your PPM, pH, and temperature are right, feed your plants and measure your runoff using your PPM or EC meter to ensure your plants are taking up their nutrients properly.