Light yellow to tan angular
spots first appear on upper leaf surfaces. The spots are angular due to
restriction by veins. Leaf distortion also occurs on new growth and older
leaves may drop.
COMMENTS on disease
Warm, wet conditions favor
Minimize leaf wetness by
irrigating the root ball rather than foliage. Irrigate early in the morning to
minimize periods of leaf wetness. Prune to allow good air movement through the
plant canopy. Fungicides may be necessary for disease management. Coverage of
both leaf surfaces is essential.