Here’s the finger technique for watering. We found this very helpful. Stick your finger into the soil up to your first knuckle or so. If the soil is dry in the first inch to inch-and-half, water. (This applies to medium sized containers and above. Sticking your finger in a small pot may damage the roots).
The ideal pH for marijuana ranges from about 6-7. pH is the rating for how acidic or not something is. This affects your water, soil and plants. If the pH is too high or too low, your plants will have trouble taking in nutrients. There are pH testing and adjustment kits for purchase online or at your local grow store. Or you can try mixing your water. The pH of water in Humboldt County is 6.1.
You may have seen three numbers on the label of fertilizers and nutrients at your local grow store. Well, they stand for Nitrogen, Phosphorus, and Potassium, respectively. The number shows the percentage of each element contained in the fertilizer.
A solution high in Nitrogen is most commonly used for the vegetative phase (pre-bloom) of your plants. Phosphorus is good for root growth and flowering while Potassium promotes disease resistance and strengthens plant tissue.
We highly recommend gardening as form of therapy. For one thing, it gives you something productive to do. For another, (with marijuana in particular) you get a very satisfying sense of accomplishment.
We know; people love their tomatoes, but c'mon.