I have a Meyer lemon which is my pride and joy.
The lemons will take their time turning yellow, but they will.
My
tree is loaded with green lemons now, and was only purchased and planted in, I think, December.
I have mine in a 24 inch pot, in full sun all day.
This is my second
tree, the first I gave to a neighbor when it became too big to handle.
I use both citrus food and Miracle Gro, which the nurseryman told me to use as a supplement.
I was advised that a potted lemon
tree should be fed citrus food every 6 weeks, and not seasonally as the packages directs.