The name Meiwa (明和) references the Meiwa era in Japan (1764–1772), reflecting its historical recognition and naming tradition. The tree is similar to the Nagami kumquat in appearance, but it cannot be budded onto all the same rootstocks as Nagami. Trifoliate seems to be the best rootstock choice for Meiwa. Kumquat trees are especially susceptible to zinc deficiency, which can cause small leaves and reduced internode distance. As with Nagami, Meiwa trees are semi-dormant in winter, allowing them to withstand temperatures below freezing. The flowering season is in summer, and the fruits mature in late winter. The almost-round fruits are orange at maturity, up to one and one-half inches in diameter. The sweet rind is thicker than the rind of Nagami, making it seem sweeter than Nagami. The flesh is light orange, contains a few seeds, and is acidic. Meiwa is said to be slightly less cold-hardy than Nagami but is increasing in popularity in the United States.