Fortunately, properly flushing cannabis is easy. Here are three simple steps toward healthier, happier, and more smokable buds.
Step 1: Gather, purify, and pH test the water
Gather double the water to fully drench the soil. It may not be necessary to use all of this water. If indoors, it is recommended to make sure there is an empty water catch underneath well-draining pots.
The best water for cannabis is filtered using an air stone or carbon filter to aerate the soil and remove compounds like chlorine.
pH test the water to make sure it is in the optimal range for cannabis plants, which is between 6.0 and 6.8 for soil. The pH can be as low as 5.8 in hydroponic systems.
It is important to pH the flushing water to make sure that some metals and salts will be properly removed during the process.
Step 2: Water until the drainage runs clean
Water the plants until the drainage runs as clean as possible. At first, the water may be a murky, brown, or contain soil clumps. When properly flushed, drainage water should run clean.
It may be necessary to saturate the growing medium/container completely, then add more fresh water after it begins to drain.
Some growers go as far as to measure the total dissolved solids (TDS) in the drain off with a TDS meter. Though, this is not an essential tool for most home growers.
If measuring the TDS, numbers should drop down to 50 parts per million (PPM) of dissolved solids after flushing. It is recommended to keep flushing until numbers the numbers are reached.
Let the soil dry as normal. If needed, repeat the flushing process during the next watering. A grower will be able to tell if additional flushing is necessary by either measuring the TDS of additional runoff or by visually assessing the clarity of the drainage.
Be sure to take precautions to prevent excess humidity in the growing environment while the plants are wet. The last thing anyone wants is moldy bud right before harvest, so temperature control, air circulation, and proper ventilation are important here.
Step 3: Take time for the cure
After harvest, properly drying and curing the bud will further improve taste, harness, and overall smoking experience. The best results often come from slow drying and curing processes.
After harvest, hang drying or using a drying rack will help eliminate residual moisture. Many growers use fans to ensure proper air circulation and ventilation. Drying should happen away from risks of contamination, molds, and mildews.
Buds are moved from drying to curing when stems inside buds can be easily snapped. Curing in size-appropriate, wide-mouth mason jars is recommended. Placing a food-grade desiccant or a 62% humidity pack will help maintain optimal moisture levels while curing.
For more information on drying and curing, take a look at the full article here.
For more information on why you should flush your weed properly, take a look at the full article here.
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