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Citrus trees do not go dormant in winter and will tolerate slightly lower light conditions during this period of slower growth. If your growing space receives at least 5-6 hours of full direct sun per day, supplementing with full spectrum bulbs or fluorescent plant lights can help trees perform well.itrus trees can be grown easily indoors! Key elements for success are good light, adequate humidity indoors in the winter, well-drained potting soil, additional nutrients, and consistent watering. Take any one of those away and problems can develop.
Now is also a good time to plant 5-gallon citrus. Water deeply once this month. April Remove any citrus you did not eat, since they fall from the tree. If you still have grapefruit on the tree, you might decide not to pick them up, they keep on getting sweeter until the summer. It is still a good time to plant citrus. Check that all the trunk parts of citrus and young trees that are exposed to the sun are painted white. This keeps them cooler and protects them from sunburn. Use white latex paint diluted with water (1 volume white flat latex paint for 1 volume water).