Grow Limes Indoors
They can also be propagated at home from cuttings, and seed. If you decide to grow Lime Trees from seeds, allow the seeds to dry out for up to two weeks. Once dried, plant the seeds about an inch deep in good potting soil and cover with plastic wrap. Once the seed has germinated it should be placed in a sunny location. Any container used for Lime trees and any indoor fruit trees, should provide ample drainage and room for growth.
Lime trees can be put outdoors during the summer months, this is recommended to increase their chances of bearing abundantly. When grown indoors they do not have the advantage of pollinators, bees and other insects. Placing them outdoors during the summer allows for this. You can also hand pollinate them.
Prune as necessary to shape the tree. Pruning will also encourage new branch development, and create a more compact and appealing shape. Lime trees that don't get enough light can become spindly and unhelathy. Should this occur, prune about 1/3 off the top growth and place the tree in a sunnier location or under grow lights
Supplemental light , such as grow-lights or fluorescent plant lights will help them produce better, especially if your location is not optimally sunned.
Lime trees will benefit from a mildly nitrogen rich or balanced NPK fertilizer. Micro-nutrients such as copper, zinc ,magnesium, manganese, iron, and boron. They prefer an acidic soil, so an acidic fertilizer can also be beneficial in citrus tree fertilizing, though not absolutely essential. Fertilizer developed specifically for citrus trees is naturally best.
In winter months, artificial heat dry the air so plants will need added humidity. Misting the Lime trees foliage with a simple spray bottle is good way to help citrus cope with the indoor environment in winter. You can also add moisture with a humidifier, or by placing them, containers and all on a pebble filled tray with water added to the top of the pebbles.
Lime trees are susceptible to spider mites, mealy bugs and scale. Check the trunk for mealy bugs and scales. To treat spider mites, spray your plant with insecticidal soap or horticulturist oil, which will smother the insects. clean the foliage, top and bottom sides of the leaves as well. Neem Oil is effective against Scales and Mealy bugs. Rubbing alcohol applied with a Q-tip will also work in mild infestations.