Whether you are new to growing or a more seasoned cannabis grower, watering your plants can become a tricky ordeal. Knowing when to water, how much water to give, what nutrients to add to your water supply, and considering factors like pH and temperature makes the process no easy feat. Proper watering techniques can make or break your cannabis plants, and some growers consider watering to be the most important factor as far as plant health.
If you are a Canadian citizen who has recently received your ACMPR license to grow legal medicinal cannabis, you might feel lost when you read article after article on watering techniques to optimize the health and potency of your weed. To simplify things, check out these basic watering tips for your indoor cannabis plants.
How often should I be watering my plants? The frequency of watering depends greatly on the stage of growth as well as the size of your pots, so it really varies for each grower. The best advice is to really observe your plants; they’ll tell you what they need. There are signs for underwatered and overwatered plants and you’ll quickly get to know your plants on a personal level. When your plants are thirsty the leaves might look lifeless and droopy and might even lose vibrancy in color.
You’ll also be able to tell if they need water by checking the soil and feeling the weight of the pot. Dry soil and a light pot means it is time to water. Be sure not to overwater – you’ll be able to tell because overwatered plants also have droopy leaves, but the tips typically curl in. The humidity in the grow room might also be extremely high when plants receive too much water, so set up a humidity sensor in the center of the room.
How much water should I give to my plants? The key for knowing how much water your plants need is to observe the run off. As you water, you’ll want to soak the pot entirely and wait for water to make its way down through the plant and exit through the bottom of the pot. You’ll learn over time how much water each plant needs, but keep in mind that more water is required as the plant grows.
Should I add nutrients to my water? Yes, you should be adding nutrients to your water – this will lead to healthy and happy plants. The main nutrients that your plants require is nitrogen, potassium, and phosphorus and you can find tons of different nutrient blends on the market that include each of these. Instructions for use will be on the back of each bottle, so be sure to read carefully. Many new growers make the mistake of adding too many nutrients thinking it will benefit the plant in the end. It does exactly the opposite, however, and it can even be more detrimental to your plants than too little nutrients.
What is the optimal pH and temperature for watering? As you are preparing your water, you’ll want to check the pH and temperature. The optimal pH is around 6.2, but plants can handle anywhere between 5.5 and 7. Invest in a pH meter and products to help you adjust the pH value of your water. Also take note of the temperature as any water that is too hot or too cold can shock the plants and stunt growth. Try to keep the temperature around 70 degree Fahrenheit if you can.