These cute little Mandarin Orange plants appear all over Singapore during Chinese New Year. The markets are also full of these oranges because mandarin oranges are shared among relatives during CNY, signifying good luck for the coming new year.
The picture is from a temporary stall at the mall near my apartment where they've been selling these plants over the past two weeks. Usually shops and office buildings keep many of these in the lobby. I am guessing they are bought for houses too.
The tiny mandarin oranges that come into season especially at this time of the year are insanely sweet, cheap, and delicious!