Hong Kong Kumquat
World Smallest Kumquat
Hong Kong Kumquat [ aka Fortunella hindsii, mini kumquat, Kin Kan ] produces bountiful clusters of minute, bright orange fruits that average roughly only 1/2 inch in diameter, pea-sized. The fruit is extremely tart, while the edible skin is mildly sweet. The 3 to 4 relatively large seeds withi n the fruit make eating it raw and ala carte problematic. It rivals Seaberries aka sea buckthorn for the title of worlds smallest citrus fruit.
It is a primitive kumquat, in its purest form it can be found growing wild in Southern China and Indonesia. It's slow growing and works well as a bonsai. Fruit.
Hong Kong Kumquat is sub tropical and flourishes in day time temperatures over 75 degrees Farenheit up to between 95 and 100. It can tolerate temperature dips as low as the mid 50s, but for extended periods of cool climate it will go dormant. Once it enters dormancy [hibernation] it becomes cold tolerant down to single digits. Kumquat plants grown in cooler climates tend to produce tarter , more bitter fruit.
The tree itself is a tad thorny with leathery, glossy green leaves. It blossoms with small white fragrant flowers. Either at maturity or while in bloom the plant is quite attractive either indoors or out.
Full sun is best, but light shade will suffice.
Well drained fertile soil high in organic content. Do not fertilize young kumquat trees till it is several months old, once you start fertilizing, do so in moderation.
pH in the range 6.5 to 7.5
In its native China the fruit is eaten raw at times but is more commonly used as a flavoring for assorted dishes, preserves, marmalades and jellies. It is also preserved in honey and liquers.
Root rots are at times a probem. It is caused by excessive moisture, which should be avoided. You should also keep mulch from coming in direct contact with the base of the tree, a small clear circle at the trunk base is sufficient.
Citrus does not allways lend itself well to being root bound or 'pot-bound', Kumquats are no exception. They can be grown successfully in containers, but you'll need a relatively large container with more than ordinary drainage holes. Once the tree is established, elevating it slightly off the ground is advantageous not only for drainage but air circulation as well.