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Spreading the Word
Typical Appearances
Briefing
Prevention
First Aid
Medical Care
Identification
Stems
Reproduction
Foliage

Basic Foilage        
Arrangement
Seasons
Development
Death

Variation             
Genetic
Light
Stem Growth
Soil
Male vs Female

Risk Management
Biochemistry
Anecdotes
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Appendices

Dermatology
Anacardiaceae

About the Author

 

Variations in Foliage

The Dying Leaf

After treatment with Round Up, poison-oak looks like this:

 Death

After being cut, it looks like this:

 Death

Poison-oak is dry deciduous. It runs out of water in the driest locations in late May. A few leaves have turned white, which is not distinctive; other plants are showing the same changes. Some of the damage may be due to insects and trauma:

Death

By July this is happening more often, and the color of the dying leaflets is distinctive:

Death 

In August the typical dying leaflet is orange, and red-orange in September and early October:

 Death

The typical leaflet is fire-engine red, often on the ground underneath the plants, from October 15 through November.

 Death

 

All content copyright Dr. Curt Beebe. Please do not use without permission.