I don't think this is serious, but just to make sure, check for mites, scale, and mealy bug scale.
Otherwise, I would say it is possible that this is the beginning of senescence, and the leaves are on their way out due to old age. However, my eye is not trained to pick up on problems.
__________________
"We must not look at goblin men,
We must not buy their fruits:
Who knows upon what soil they fed
Their hungry thirsty roots?"
Goblin Market
by Christina Georgina Rossetti
|