Plant Problems

Manganese deficiency in cannabis usually appears as yellowing between the veins of young leaves, followed by fine bronze or brown speckles as the problem develops. Although it c...

Iron deficiency in cannabis usually appears as pale or yellow new growth while the older leaves remain relatively green. The most recognizable symptom is interveinal chlorosis, ...

Phosphorus deficiency in cannabis slows root growth, limits vegetative development, and reduces flower production. Early signs appear on older leaves, which darken before develo...

Calcium deficiency in cannabis is one of the most common nutrient problems growers encounter, but it's also one of the most commonly misdiagnosed. The first signs of calcium def...

Potassium deficiency in cannabis can cause yellow leaf edges, rusty spots, burnt tips, curling leaves, and slower flower development. However, these symptoms can also resemble n...

Magnesium deficiency in cannabis is one of the most common nutrient problems growers encounter, yet it is also one of the easiest to misdiagnose. While yellow leaves are often t...

Cannabis nutrient deficiencies can appear as yellow leaves, brown spots, burnt edges, slow growth, or distorted new foliage, but these symptoms do not always mean the plant need...