Hi all,

I live in a zone 7a and I have 2 Meyer Lemons, 3-4 years old growing in containers outside in full sun.

The leaves for quite a few weeks have begun to develop yellow spots, spreading evenly on the leaf till they slowly fall off. Sometimes the leaves curl in as well from the sides. Some of the yellow curled leaves get spiderwebs here and there.

Not sure if that is all related.

Last time I fertilized was about 1.5-2 months ago

How do I fix this? I feel like my lemons are not thriving. Is it overwatering? I have been watering every day but it is HOT here. Is that a sign I need to fertilize? What do you all think?