Sweet Kumquat Tree
The Kumquat Tree (citrus japonica) is a small citrus tree that grows in climates that typically is too cold for most citrus trees. They produce an olive-shaped fruit similar in look and size to a miniature orange. They are sweet and sour and typically used in marmalade spreads.
Growing Kumquat trees is fairly easy as long as you plant them in an area that receives full sun, slightly acidic pH levels, and well-draining soil conditions. These trees are best suitable as outdoor trees in hardiness zones 9 and 10. These trees can withstand winter temperatures as low as 18 degrees. If you live in any other growing zone this tree can survive as a potted indoor tree. When you give it the correct lighting and watering conditions, it will thrive indoors without a problem.