Gardeners in any part of the country can grow fruit trees. Well, not outdoors necessarily, but indoors. Dwarf fruit trees can be grown in containers and placed in any bright spot in the house. Dwarf trees come in two varieties--regular and genetic. Regular trees are the result of grafting a regular size fruit tree onto dwarf rootstock. Genetic dwarf trees are trees bred into a small size. Both types grow regular sized fruit.
Choose a planting container made of any material. Cover the drainage holes in the bottom with screen mesh to keep the soil from flowing out. Lay down 1 to 2 inches of gravel at the base of the pot to help with drainage.
Prune the roots of base root fruit trees. Cut off 1 to 2 inches of the roots, alone with dead or damaged branches. Also remove branches that are growing below the diagonal scar or graft union.
Fill half of the plant pot with a light and airy potting soil. One containing perlite is ideal. Place the fruit tree in the container and continue filling with the soil, up to the line where the soil was in the nursery. You can tell by a line of demarcation on the trunk. Leave 1 to 4 inches free at the top of the pot to allow room for watering.
Water the citrus tree thoroughly and put it in a spot that gets direct, bright sunlight. It's best to put it somewhere that gets southern or western exposure.
Water the fruit tree regularly. Do not let it dry out between watering. Feel the top few inches to determine when it's time to water the plant again.
Fertilize fruit trees once growth is evident. Use a food contains iron, manganese and zinc. Apply it following the label instructions once a month.
Keep it humid indoors for optimal growth. Use a humidifier in the house or mist the fruit tree often. You can also put the plant in a tray filled with water and pebbles.
Prune fruit trees grown indoors anytime of year. Cut off branches that are rubbing or crossing each other. Also pruning branches growing below the graft union.