I have a lemon tree which doesn't seem to be doing too well due to insufficient light. The temperature in the house is 69 F, and outside is 50-66 F. Should I move it outside or buy grow lights?
As long as danger of frost has passed and night temperatures are not below 40 to 50 degrees F. you can move your plant outdoors. Make sure you transition it to full sun. Start with morning sunlight and then more shaded in the afternoon. Gradually work up to full sunlight.