There are many biological and chemical fertilizers that can help to combat different pests and fungi that can invade cannabis plants, no doubt these products are the most effective if we want to completely eliminate insects in our culture.
Although if we have any reaction time or we want to save money in the grow shop, I’ll give you some tips to combat fungi such as powdery mildew, Botrytis, Pythium, Roya, and insect pests such as spider mites, mealy bugs, leaf miners, caterpillars, whiteflies, aphids, snails and trips in a 100% organic will not be definitive, but it helps to strengthen the marijuana plants, removing part of the pest and clearly improving crop production.
A good home remedy for red spider is Nettle, further stimulate growth and plant vigor is an excellent insecticide against red spider mites. We employ whole plant unless roots. We need 200 grams of fresh nettles, 40 grs. dried nettles and a liter of water. Let stand 5 days, we filter and get the potion.
Mix 100 ml of potion with 1000 ml of water and we have 100% homemade fertilizer, and then sprayed on the leaves as usual.
Remedy against mealy bugs, is one of the worst pests that can affect plants of marijuana. If plants are not affected can be used alcohol 96º and directly apply it on the leaves with a brush and manually removed the scales, it would not hurt to spray leaves then with sulfur (that powder or diluted) to control eggs and prevent aphids and powdery mildew
I also put yellow sticky traps, which attract all midges (white, leaf miners).
Remedy against caterpillars, chop the sage leaves, add a quart of hot water, let stand for 10 minutes, filtered and the leaves are pulverized.
Remedy against the whitefly, put some garlic cloves into alcohol and let marinate a couple of days after pulverize leaves and goodbye to the plague.
Aphid home remedy is very simple repelling aphids from plants. Two cloves of garlic soaked in 500 ml of water is left for a day, cooked for 20 minutes on low heat, cool, and is applied by spraying the leaves.
Remedy against trips, to remove trips of marijuana growing we will need 40 grams of snuff and a cigar. We let marinate one day in a liter of water, filtered and you can spray the leaves.
Regarding fungi that can attack the marijuana plants, powdery mildew, Pythium, Gray Mold, rust or Botrytis, they can remove them if you do not take two or three days more in our harvest with BAKING SODA.
Mix baking soda with water to saturate the solution and sprayed on plants that have been attacked by fungi. Bicarbonate kills fungi because it alters the pH of the foliage, but does not harm the plant.