Q.Meyer lemon fruit stays green
I have had a Meyer Lemon Houseplant for three years. It is about 2′ tall. I put it outside for the summer, and in the south window of a heated garage for the winter. It has formed 6 lime-size lemons in the two years, but none of them have turned yellow. I have not picked or tasted any of them. Do I need to feed it more?
Meyer Lemon trees need plenty of sunlight, water and fertilizer.
Here are some links to help you with care information and how to help your tree fruit well.