The key lime is at its best when it begins to get some yellow color. If you leave it on the tree until it gets full yellow (it will never get dark yellow like a Meyer or a Eureka) the key lime will fall from the tree... again, unlike a Meyer.

What about Persian lime? I got one the other day and very little juice came out.

The problem with the Persian (Bearss) lime is, at least in Europe and the US, they are imported fully green in color... for several reasons I will not go into here. At the full green level the Bearss has very little juice and less flavor... unless you think bitter is a flavor. The Bearss is also at its best if left on the tree until it shows a little yellow; the problem with that is if you are exporting them, no one will buy them.

Aw I see. The one I got was had a strong sour taste, which for us is good. But it didn't have alot of juice. I wish I would of known that they didn't produce alot of juice. I will let sit on the tree until some yellow shows up. Oh well, I still have a Mexican lime that should fruit in a year or two.

Thanks for the info.

Thanks John, I appreciate the help!