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Citrus Problem?

9 years ago
last modified: 9 years ago

I'm wondering if this grayish tint on my lemon tree branches is something to worry about. The first photo shows (sort of unclearly) a stub which was where I pruned the branch about 4 to 5 months ago. The second photo is where I pruned off 2 leaves that had been damaged. Thanks in advance for the help.