I'd prefer to start it from seed, but I've heard that seeds won't necessarily grow a tree true to type. Peel back a small section of the bark about 2-3" from where you will separate the limb from the tree, apply the root tone per instructions and wrap with a good potting soil held in place by aluminum foil (sort of a bandage or a foot ball shaped container), poke a few pencil sized holes in the foil. Citrus japonica), sometimes spelled cumquat or comquot, is a small citrus fruit that grows in climates too cool for other citrus plants.The fruit is sweet and tart at the same time and is eaten without removing the peel. At oneHOWTO we you give the necessary tools to learn more about this tree. One of the most natural things about a kumquat tree is that they are self-pollinating, so you do not need to grow multiple trees; one will be enough. The proper way to eat a kumquat is to bite into it like you would an apple and enjoy its sweet skin and sour fruit and juice. Lime cuttings will survive better if grown in containers. The spring is going to be the ideal time to start planting a new tree from seed, as there are higher chances of rain and lots of sunshine. The kumquat tree is native to China, and the fruit it bears is also known as kumquat. Lime trees grown from cuttings will bear fruit as soon as three years after being planted Although the preferred method for propagating limes is grafting, they can also be started from stem-tip cuttings. I love the idea of growing a kumquat tree in a container (where I live I can't grow it outside). If you want to know about the perfect conditions for how to grow a kumquat tree, then read carefully. This sweet and tart fruit is quite delicious and is very seldom found in supermarkets. If you're interested in learning how to grow kumquats, you've come to the right place! These exotic fruit reaches heights from 8 to 15 feet and have a rounded canopy. It seems, though, that they probably would; I mean, if you're a commercial kumquat grower and you have 200 kumquat trees around each other, they most likely will fertilize each other. Its small size means it can grow and be planted in both pots and gardens. Kumquats (Fortunella spp.) Kumquat fruits grow on evergreen trees and are native to China. The tree is not well-adapted to grow outdoors year round in most of the United States. Kumquat Trees Growing. Kumquats are the smallest members of the citrus family and the only citrus that has a sweet skin. Kumquat (Fortunella japonica syn. are hardy and easy to grow, but starting a new tree from seed is tricky.