Kumquat

VARIETY SEASON OF
MATURITY
SEEDS/
FRUIT
FRUIT
SIZE
COMMENTS
CENTENNIEL (oblong) (variegated) NOV – MAY   SM - MED
2” – 2-1/2”
Sour, similar in taste to limequat (Key Lime). Turns orange when very ripe.
MARUMI (round)
Fortunella japonica
  FEW SMALL
1” – 1½”
Plant thornier than Nagami; more tart than Meiwa. Cold sensitive.
MEIWA (round)
Fortunella crassifolia (F. margarita X F. japonica)
NOV – MAY FEW
3-5 (very small)
SMALL
1” – 1½”
round
Sweetest of all kumquats; best eating kumquat. Thick rind, little juice. Used for preserves, candied fruit & eating out of hand. Compact growth habit; tree is small, thornless. Cold hardy.
NAGAMI (long)
Fortunella margarita
NOV – MAY FEW
3-5 (very small)
SMALL
1¼” – 1¾”
oblong
More tart taste than Meiwa & brighter orange color. Used for preserves & commercial landscaping. Small – medium, vigorous tree has small, dark green leaves, fine branches. Cold hardy.

Note: Nothing requires a pollinator; if did, may produce more fruit. < 25-30 F, need to protect all citrus. HARD FREEZE: 28 F > 4 hrs.

Kumquats are a group of small fruit-bearing trees in the flowering plant family Rutaceae, either forming the genus Fortunella, or placed within Citrus sensu lato. The edible fruit closely resembles that of the orange (Citrus sinensis), but is much smaller and oval, being approximately the size and shape of an olive.

They are slow-growing evergreenshrubs or short trees, from 2.5 to 4.5 metres (8 to 15 ft) tall, with sparse branches, sometimes bearing small thorns. The leaves are dark glossy green, and the flowers pure yellow, similar to other citrus flowers, borne singly or clustered in the leaf-axils. The kumquat tree produces 30 to 50 fruit each year. The tree can be hydrophytic, with the fruit often found floating on water near shore during the ripe season.

The plant is native to south Asia and the Asia-Pacific. The earliest historical reference to kumquats appears in literature of China in the 12th century. They have long been cultivated in Japan, Taiwan, the Philippines and southeast Asia. They were introduced to Europe in 1846 by Robert Fortune, collector for the London Horticultural Society, and shortly thereafter into North America. Source: http://en.wikipedia.org/wiki/Kumquat