Humidity

The cannabis plants also emit toxins through their leaves and this is important for the healthy development of the plant.  They are unable to do this when the room is extremely humid, which instead causes the leaves to grow wide and there will be a reduction in the amount of resin will be produced.  It is important not to let the room become too warm in a growing area with too little humidity, this will cause the plants foliage and buds to brown. This occurs because the roots are not able to get water to the foliage fast enough in a room dry room with high heat.

Ventilation

Ventilation is one of other important factors in growing, and the more plants, there are in the growing area, the more important ventilation becomes. The reason ventilation is so important is that marijuana plants breathe through their leaves and also emit any toxins through their leaves. If the ventilation is poor the leaves of the ganja plant can become clogged and unable to breathe or emit the toxins and this will cause the leaves to die.

The amount of ventilation needed will depend on the amount of plants, with just a few plants in a closet growing area opening and closing the door is often enough ventilation for the plants when tending to them. When growing in other secret areas of the house like the basement or attic, the use of a fan will create the ventilation needed and it will also stimulate the plants to grow. These plants are healthy not only due to the ventilation.  The air from the fan also helps to promote the plants to grow sturdy stems and because the plants do not have to deal with weather issues like wind and rain they concentrate on producing leaves and resin.

Dehumidifying

Humidity control is important and in some cases where the grow area is larger than a closet it is necessary to use a dehumidifier, this is because humidity will cause the growth of wide leaves and there will be a reduction of resin produced. The leaves when laden with humidity cannot dry fast enough and that makes it more difficult for the plants to grow properly.

The grower is usually concerned with the quality of the crop and that means having narrow leaves and more resin, this can only occur in a grow room that does not have a high level of humidity.

The theory is that the cannabis plant will produce more resin when the room has less humidity in order to keep their leaves protected from drying out. In effect, what this does is cause the ganja to grow with narrow leaves that are protected because they are coated with resin and that makes a quality harvest.

Watering

Watering is important not only in the amount of water the marijuana plants will receive, but also in the quality of the water. The cannabis plant will not be able to adapt to the chemicals that are used in city water and with most growers living in areas where they do not have their own personal well, but instead are provided water by the city it has chemicals. These chemicals include chlorine, this however will dissipate if left in an open container for twenty-four hours, so by letting water that will be used on the plants sit for one to two days it will be safe for the plants. Another thing that allowing the water to sit will do is bring the water to room temperature, this means that it will not cause the pot plants shock when they are watered like it would with colder tap water.

Another thing that can be done easily is to purchase anti-chlorine drops at a pet store that is used for aquarium water, this will neutralize the chorine and it will then be safe for the weed crop.
The actual watering of the plants is important and it should be done so that the soil is evenly moist and moist all the way to the bottom of the plant, this means for a five gallon planter filled with soil it can take as much as three quarts of water. The reason that the grower must ensure that the water is reaching all the way to the bottom of the pot is that if it does not then the roots are not getting the needed amount of water it needs for the plant to grow.  Then they will begin growing in the direction of the top of the pot where they can acquire the needed amount of water.

It is also important for the plants to have proper drainage, and the best way to ensure this is to make sure there are holes in the bottom of the planters. This allows extra water to drain out of the planter and if this water could not escape it in time could cause the roots of the cannabis plants to rot, or cause other disease in the plants. Standing water in the pot can also allow mold or mildew to form, which will contaminate the plants and cause disease. This is why it is important when preparing the soil that it is mixed with sand and pearlite or sponge rock, which will allow proper drainage. The pearlite or sponge rock allow for drainage and keep the soil from clumping and clogging the holes in the bottom of the pot, while the sand helps to retain moisture.

Testing the soil for moisture is easily done, putting a finger in the soil will tell if the soil is moist and when it is moist on the top then it has even more moisture down