These are leaves from my potted key lime tree. I just purchased this tree about a month ago. I don't know how old it is, but it is young.

I am a complete novice with plants. Whatever is on the leaves was probably there when I purchased it.

It was in a soil based potting mix with good drainage. I have since repotted it into a gritty mix. Since I have had it I have watered and used foliage pro with each watering.

I have noticed that I now have a couple leaves on my meyer lemon that seem to be following suit.

Please tell me what it is and what I can do about it. Thanks so much.

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