Enemies of Cannabis - Diseases

Looking for pests and not diseases? Click here.
Before we move into this remember 1 thing - PREVENTION IS BETTER THEN A CURE -
Moving on:

Deficiency - This is the easiest to solve, simply find whats deficient and fix it.
A shortage of iron produces yellowed leaves that may fall off the plant. The pH plays a role in the prevention of deficiency disease. Keep the pH value around 5.8. If this value is too low, the plants can't absorb calcium as well. Consequence? The osmotic processes are impeded. Too low a pH number causes less iron in-take, with the well- known results. A second form of deficiency disease is caused by a shortage of the primary nutrients (NPK). It often involves a lack of nitrogen (N). A nitrogen shortage delays growth, and makes the lower-most leaves turn yellow and again, they can drop off.

Molds can completely destroy a garden in a short time. If the climate in the grow room is well-controlled, molds, in general, have little chance. Molds and fungus thrive very well under humid conditions, preferably without much air circulation. Under these circumstances, mold spores, which are always present in the air, search for a spot to grow into mold cultures. If you don't succeed in preventing mold growth, then you must do something about it as quickly as possible. With light mold growth, immediately remove the affected plant parts, and then create a climate in which cannabis does well, and molds don't (good ventilation, control of humidity and temperature, and putting your plants on a medium which is not too wet, but holds water).

Pythuim Mold (Root rot) This affects roots and inter nodes up to the first set of leaves usually. Only in
the most extreme cases will it go any higher. As its the wet soil it lives on, but again, rare.
Root/stem rot can go unnoticed in soil, If ya love your plants though, youll notice it before they cause
the plants to fall over at the mercy of gravity. If this happens and the plant in general is in "ok" health.
Clone the entire plant, or chop it down into many. the base will be destroyed beyond recognition.
To avoid this, constant soil/rockwool temperature will work. extreme dips and spikes increase its growth.

Mildew (aka toprot) attacks plant tops, but can technically attack in opposite of root rot "anything above the first
inter node is susceptible It also looks the same, it will begin to rot plant tops, branches and those bud
sites your working so hard to protect.
Mildew is white, "Powdery white" is a specific type, but describes most mildew well.
You will need to remove the part of the plant and then a bit to ensure safe removal.
sadly in some cases this means the whole plant top. All is not lost, as the plant will recover
and act as if it had been simply topped, and will side branch, it simply sets you back weeks.
Humidity during the dark period is what helps here, if its too high during lights out, mildew can take hold.


Im pretty sure im missing something here, let me know in the comment box below.