Where on the palm are the symptoms/problems appearing?

Leaves (canopy)

Entire Canopy (most or all leaves):

1. Wilting
2. Most or all leaves necrotic, but still erect in canopy
3. Leaves reduced in size
4. Canopy growth at sharp angle to trunk axis
5. Canopy topples from the trunk, usually without warning; rotted, black fibers evident
6. Collapse of almost all leaves in canopy (more than wilting)
7. Leaves tattered
8. Leaflets missing or partially missing from leap tips
9. Chlorosis or necrosis of distal portion of leaves close to high voltage power lines
10. Leaves uniformly light green
11. “Spotting” on leaves
12. Leaf bases (and often dead leaf blades) covered with light salmon-pink spores

Most severe on oldest (lowest) leaves:

1. Chlorosis (shades of yellow)
2. Leaves discolored, but not necessarily chlorotic; usually shades of red to dark
   brown or gray
3. Leaflets have translucent yellow/orange or necrotic spotting or yellow-orange     discoloration
4. Leaflets of oldest living leaves are necrotic on one side of rachis only (or only some leaf segments necrotic if it is a fan palm) and petiole/rachis has reddish-brown to brown or black streak and vascular discoloration evident in cross-section of petiole
5. Tip or marginal leaf or leaflet necrosis
6. Chlorotic and/or necrotic gray, brown, or black “spotting”
7. Gummy exudates (“bleeding”) from multiple small 5 to 8 mm (1/5 to 1/3 inch) wounds in palm leaf bases; galleries in leaf petioles
8. Old to middle-aged leaves have necrotic “skeletonized” patches with only veins and surface layers of leaf intact; underside of leaf necrotic patches typically covered in tubes of insect frass
9. Leaf kinks and hangs parallel to trunk
10. More lower leaves dead than normal; upper canopy leaves may be wilted

Affecting youngest leaves only:

1. Spear leaf (youngest unopened leaf) discolored or collapsed
2. No new leaves emerging
3. New leaves chlorotic
4. New leaves reduced in size, but older leaves full-sized
5. New leaves have sharply hooked leaflet tips
6. Spear (and often other new leaves) fail to open normally
7. Transverse puckering or transverse translucent streaking on leaflets

Flowers and Fruits

1. Flower stalks are necrotic; look for other symptoms to separate deficiency from disease
2. Premature nut drop in Cocos nucifera (all the nuts drop at once)
3. Premature fruit drop in Phoenix species (and other LY susceptible palms besides coconuts)

Trunk

1. Gummy sap flowing from trunk; usually discolored (“bleeding”)
2. Holes in trunk
3. Longitudinal splitting of trunk
4. Tapering of trunk near the top (pencil-pointing)
5. Shriveling of trunk
6. Fungal conk (basidiocarp) present on lower trunk
7. Trunk collapses on itself; trunk rotted at point of collpase
8. Leaf canopy falls off trunk
9. Outer “bark” of trunk sloughs or peels off
   

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