Pests can cause yellow and brown spots on cannabis leaves. It is necessary to regularly inspect the bushes for insect damage, paying special attention to the inner surface of the leaves. Parasites and pests multiply rapidly and are capable of infecting the entire bush in the shortest possible time. A little later, the disease will manifest itself as yellow or brown dots on the leaves, which will indicate the active development of the disease.
It is possible to determine the defeat of a plant by a fungus at an early stage by carefully examining not only the leaves, but also the base of the stem in the immediate vicinity of the soil. It is this place that is often struck first, since it is located at the maximum distance from light sources.
Mites attach to the plant from the back of the leaf and systematically suck out nutrients. On the outside, at the puncture site, a small white or yellow dot first appears.
Spots on leaves can also appear due to errors in the dosage and proportions of fertilizing, as well as with the pH level of the water for irrigation. These factors are related to each other.
So, a lack of any trace element in a plant may be due to several reasons: underfeeding a plant or an excess of some minerals in the bushes can interfere with the absorption of other vital substances. For example, excessive potassium content interferes with calcium absorption. That is why it is important to give your plants a balanced composition of fertilizers, strictly adhering to the dosage indicated on the package. In this case, you need to monitor the pH level of the water.
You need to know that cannabis goes through 4 stages: germination, seedling, vegetation, flowering. Germination of a sprout from a seed takes from a day to two weeks, depending on the type of cannabis. It is important to select only healthy seeds - dense and dark brown. When a sprout appears, the plant is transplanted into soil or substrate.
When your plant is suffering you can easily help it by following our guidelines:
1. Adjust the mode of irrigation of cannabis with settled water.
2. Inspect the plant for leaf pests.
3. Treat the plant if pests are found.
4. Apply fertilizer as the plant grows.
5. Provide good coverage for cannabis.