Do Lemon Seeds Have Cyanide

Lemon Tree: I did the humidifier and more lighting and it popped out new leaves in February (yay!) with a bunch of buds, but it now feels like it stalled. I found spider mites on the tree, so I have been trying to wipe down the effected leaves and stems with a wet paper towel as often as I can.

do lemon seeds have cyanide 1

I bought a meyer lemon and a lime tree. I removed the tabs and now can't remember which is the lemon or lime. How can I tell which is which? I have included a picture of one of the trees. Which tree is this?

do lemon seeds have cyanide 2

How can you tell if you have a lemon or a lime tree? #305357

do lemon seeds have cyanide 3

I have a Meyer Lemon plant for 5+ years. Each winter, there is an infestation that is getting worse. It appears to be powdery mildew but also might be another problem too with black and yellow spots. In November, I bring the plant inside. Starting in ~December, leaves start to fall. By April, almost all leaves have fallen.

do lemon seeds have cyanide 4