Plant Damage / Signs:
Circular black spots form on leaves initially
Spots slightly raised
Fringed margins occur around spots
Leaf yellowing and distortion occurs
Early leaf drop often occurs
Spots can occur on petioles, flowers, canes
Conditions:
Wet leaf surfaces
High humidity, 70º - 75º F
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Plants:
Rose
Timing:
Spring, Summer
All year in mild climates
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