| Chief Sign or Symptom |
Probable Pest or Disease |
Described Under |
| Chrysanthemum leaves with brown, wedge-shaped areas, dy- ing up the stem. |
Chrysanthemum Leaf Nematode (Fig. 41B) |
Nematodes |
| Dark areas along veins |
Bean Anthracnose (Fig. iA) Sycamore (Fig. iB) |
Anthracnose |
| Small spots with light centers, reddish, often raised margins. |
Spot Anthracnose Rose (Fig. 2A) Dogwood (Fig. 2B) |
Anthracnose |
| Black spots with feathery margins. |
Rose Black Spot (Fig- 34A) |
Leaf Spots |
| Black spots with feathery margins. |
Apple Scab (Fig. 49A) |
Scab |
| Black tarry spot. |
Delphinium Black Spot |
Leaf Spots |
| Spots with definite margins, brown, tan, or gray, black dots in center. |
Fungus Leaf Spots Mountain-laurel (Fig. 34B) many others |
Leaf Spots |
| Lily Botrytis Bligh |
| (Fig- 13C) |
| Tulip Botrytis Blight |
| (Fig. 13B)" |
Blights |
|
| Hawthorn leaves with small, dark red spots; premature defolia- tion. |
Hawthorn Leaf Blight |
Blights |
| Leaves with water-soaked spots. |
Bacterial Blights or Leaf Spots |
Blights |
| Leaves with indefinite brown areas, with black dots of fungus fruiting bodies. |
Leaf Blight, Blotch |
Blights or Leaf Spots |
| Leaves with brown areas, no fruit- ing bodies, or light scalded areas, scorch. |
Sunburn, Windburn, Heat |
Weather |
GARDEN ENEMIES
