| Solving Aster Problems | |
|---|---|
| Symptoms | Probable Causes |
| Occasional Insect Pests Leaves Curled; Discolored | Aphids |
| Holes in Leaves and Flowers | Japanese Beetles |
| Foliage Turns Pale or Mottled | Lace Bug |
| Stems Go Limp; Leaves Wilt | Stalk Borer |
| Leaves Covered With White Powder | Powdery Mildew, a fungal disease |
| White Coating on Leaf Surfaces | Downy Mildew, a fungal disease |
| Leaves Spotted; Turn Brown; Drop Prematurely | Leaf Spot, a fungal disease |
| Orange Powdery Spots on Leaves | Rust, a fungal disease |
