1 Older (lower, or interior) leaves showing a problem
2 Leaves quickly turning yellow and falling off
• The newest leaves are getting smaller and smaller, or the plant has stopped growing at all
→ Insufficient light
• There appears to be new growth. Leaves are developing to normal size but appear wilted
→ Insufficient water
2 Leaves are off-color, but not quickly turning yellow
• Leaves are pale green. Leaf veins my remain darker green
→ plant needs some fertilizer
• Very fine dust-like particles on the leaf underside. A fine webbing may be noticed where the leaf attaches to the stem
→ May be a pest – Spider mites
1 Newer leaves showing a problem
• Leaves with straw-colored patches, sometime brown or black
→ Sunburn
• Leaves turning brown and wilted
→ Plant possibly over-watered
• White cotton-like substance on the underside of the leaves.
→ Mealybugs
• Small brown spots surrounded with a yellow-bronze halo developing
→ Fluoride damage