Ornamental Disease Control

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Dr. John F. Baniecki
WVU Extension Service
Plant Pathology and Entomology Specialist
August 2000

Abnormal growth of ornamental plants may be due to a wide variety of causes. This check list has been prepared as an aid in diagnosing some of the growth difficulties of shrubs, trees, and other perennial plants around the home. Always consider the possibility that specific insects and/or diseases could cause difficulties along with causes listed here.

Diagnose Your Difficulty

Plant stunted, weak growth, leaves off-color, limbs dying
1. Poor soil preparation
2. Drought damage
3. Poor soil drainage
4. Excess soil drainage
5. Planting too deeply
6. Improper soil pH
7. Damage to stem
A. Cold damage
B. Lawn mower damage
C. Sunscald
D. Borer damage
E. Stem breakage
F. Cat damage
Plants dying suddenly
8. Overfertilization
9. Root rots or insects
10. Severe drought damage
11. Leakage from underground gas lines
 
Yellowing (Chlorosis)
12. Nutritional deficiency
13. Poorly drained soil
14. Overfertilization
15. Damage to stem
16. Poor soil preparation
 
Browning of margin of tips of leaves
17. Frost or cold damage
18. Drought damage
19. Shock from recent transplanting
20. Poor soil drainage
21. Poor soil preparation
22. Excessive fertilization
23. Root rot diseases
24. Mechanical damage to stem
 
Plant failing to flower
25. Plants too young
26. Excessive vegetative growth
27. Floral diseases
 
Failure to produce berries
28. Frost or cold damage during flowering period
29. Plant is male
30. Improper pruning
31. Floral diseases
 
Loss of berries before maturity
32. Fungus disease attacking berries
33. Drought damage