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Symptoms of bad health: Difference between revisions
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Usually, growers only know a plant is in ill health because it looks different. There are many visual signs that can be used to
Most abnormalities in leaf color can be found in this article. This covers nutrient deficiencies and toxicities. If your plant shows other signs of damage it may be the work of [[Pests and insects|Insects or other pests]].
== By Leaf appearance==
=== Fan leaf
The color and general appearance of [[Anatomy_of_Cannabis#Fan_leaves|fan leaves]] can provide a lot of information about issues involving nutrients. If the color is uneven it can be a sign of poor health.<div align='center'>
<ul>
<li style="display: inline-block;"> [[File:Deficiency and abundance of fertilization elements.jpeg|thumb|none|600px]]</li>
<li style="display: inline-block;">[[File:Whole plant nutrient deficiencies and excesses.jpeg|thumb|600px]] </li>
<li style="display: inline-block;"> [[File:Nutrient_Disorder_visual_guide.jpg|thumb|none|600px]]</li>
<li style="display: inline-block;"> [[File:Deficiencies on fan leaves.png|center|thumb|600px]]</li>
</ul>
<p>Fan leaf patterns for diagnosing nutrient issues (click for higher res)</p>
</div>
Leaves that are a shade of very dark green can be a sign of nitrogen toxicity.
The fan leaves will also show signs of any nutrient burn taking place. Nutrient burn symptoms occur at the tip of fan leaf "fingers" where the leaf turns brown and crispy▼
=== "burned" leaf apex ===
▲The fan leaves will also show signs of any nutrient burn taking place. Nutrient burn symptoms occur at the tip of fan leaf "fingers" (the apex) where the leaf turns brown and crispy.
=== Wilted leaves ===
This can be a sign of both under and over-watering.
=== Claw fan leaves ===
The apex of the leaf clawing down is most often a sign of wind burn (airflow being too intense) or [[Diseases#Nitrogen toxicity|nitrogen toxicity]]
[[File:Leaf claw2.jpg|alt=|left|thumb]]
== By plant appearance ==
=== Root bound ===
If roots outgrow the pot they are in they become "bound". If this occurs the plant should be moved to a larger medium to continue growing. Constricting the roots will limit the overall size of the plant and may stunt it.
[[File:Rootbound.jpg|none|thumb|298x298px|Root bound]]
=== loss of stem rigidity ===
This can be a symptom of [[Watering#Under/over watering symptoms|under-watering]]
=== Purple stems ===
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