Plant health continuum and actions recommended.
| Plant continuum | Recommended action |
|---|---|
| Class 1. Normal appearance for the plant. No externally visible plant injury. No significant structural defects present. | Often no action needed, but many stressors do not exhibit external symptoms in the early or mid stages of the disease or disorder. |
| Class 2. Minimal (less than 5%) visible plant injury detected or anticipated. The plant injury may take the form of discolored or wilted leaves, defoliation, or twig dieback among many other symptoms. | Classify problem as a true threat to health of the plant or simply aesthetic injury. Notify client that injury or stressor has been observed. |
| Class 3. Plant injury between 5% and 10% is detected or anticipated. Plant injury can take the same forms as Class 2. | Notify client that injury or stressor has been observed. Treatments may be warranted to maintain plant health. |
| Class. 4. Plant vitality or structure is significantly compromised by stressor(s). | Intense multiple treatments are essential. |
| Class 5. Plant is in severe decline or a major structural failure has occurred. | Remove portion or whole plant. |