Q: Is it better to over-winter a four-foot Meyer lemon in a greenhouse, in an unheated basement beside a large window, or in the house?

A: The lemon tree wants as much light as you can give it. A greenhouse would be best but an unheated basement would be worse. I surrounded mine this year with four aluminum clamp lights, each of which contains a 100 watt equivalent CFL bulb. I learned this the hard way: my plant last year had only one lamp and it lost half of its leaves by February. However, I put it outdoors this past May and it is full of leaves now.