| Cosmos Problems | |
|---|---|
| Symptom | Probable Cause |
| Leaves Wrinkled or Curled; Discolored, Stunted, Tend to fall off | Aphids |
| Weak Growth, Leaves Stunted, Yellowing, Brown Tips; Bulbs or Roots Damaged | Root Aphids |
| Leaves Riddled With Shotholes; Caterpillar inside Stalk | European Corn Borer |
| Pale Spots On Foliage | Six-Spotted Leafhopper |
| Flowers and Seeds Damaged | Caterpillar of Sunflower Moths |
| Leaves Stippled, Yellowing Or Bronze; Dry Out And Drop May Be Webbing Visible; Sometimes Galls Form On Leaves | Spider Mites |
| Flowers Yellow-green; Deformed; Shoots Spindly | Aster Yellows, a bacterial disease; replace the plant |
| Sudden Wilting; Stems Rot At Soil Line | Bacterial Wilt, a bacterial disease; replace the plant |
| Green Plant Colors, Wilts, Tans; Pink Mass on Roots; Plant Dies | Fusarium Wilt, a fungal disease |
| White Powder Coats Top of Leaves | Powdery Mildew, a fungal disease |
| Leaves Yellow, Wilt, Die | Root Rot, replace the plant |
| Black Decay on Stems, Spreads, Brown-Black Lesions Form | Stem Canker; replace the plant |
| Dark Lesions on Stems; Roots Rot | Stem Rot; replace the plant |
| Attacks Stems at or Below Ground Level; Plant Wilts, Yellows, Decays | Southern Blight, a fungal disease |
| Plant Actually Disappears | Deer |
Solving Cosmos Problems
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