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Growing Citrus as Houseplants
Believe it or not, you can easily grow a happy, healthy, and productive citrus tree indoors! (Which varieties are best for indoor growing?) 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. Supply them as indicated below, and you'll be on your way to a beautiful tree!
Light
Citrus like 8-12 hours of sunlight a day. Full-spectrum fluorescent grow lights are the best supplement. Light is a key element for flower production in the spring. Winter foliage will tolerate slightly lower light conditions. Note: if you live in an area with cold winters and hot summers, you might consider treating your citrus as an indoor/outdoor plant.
Temperature
Citrus grow best between 55°F and 85°F. They generally need to be kept above freezing (32°F), while indoor temperatures averaging 65°F are excellent.
Soil
Use a light, well-drained commercial soil mix. Be sure the pot has adequate drainage holes as well and do not put gravel in the bottom of the pot. Place pot on pebbles in a saucer or other surface that will allow air and water flow. Be sure to apply a good fertilizer as appropriate.
Water
Water as needed to keep soil moist, not soggy. Generally 1/4 - 1/2 gallon of water every 5-7 days indoors is adequate. Do not leave container in standing water. A simple moisture meter, available at garden supply stores, will read moisture at the root level. Take it from us -- this inexpensive tool will become your best friend! You'll never again have to guess about whether or not a plant needs water.
Humidity
Citrus foliage benefits from being sprayed with water. in winter months, heated rooms may need additional humidity. Misting, trays of pebbles, or humidifiers will help the leaves stay lush and healthy.
Enjoy!
When you provide these essential elements of success for indoor growing, you'll enjoy a fragrant, ornamental, and delicious houseplant unlike any other!
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