PlantFiles: Chinese Grapefruit, Pomelo, Pummelo, Pumello, Pamplemousse, Shaddock
Citrus maxima

Makes great house trees.
I've been raising pummelos from grocery store seed for years. They have survived cold nights (40-50F) in Idaho spring and fall. They have survived my rather forgetful watering tendencies, to the point of only wilting slightly when the soil is so dry it separates from the pot. They have survived months without much light due to lack of window space and gray northern winters. Despite what I've read about the tendency of citrus to defoliate at the drop of a hat when kept indoors, mine have never done so despite it all.
Slow growing under the above conditions (understandably), but incredibly worthy even without flowers or fruit. Beautiful semi-glossy large double leaves like Kaffir lime smell nice when crushed. I can't wait to build a greenhouse and see what happens when they get moved into it.

I purchased the plant (% gallon pot) last week from Home Depot, Englewood, FL. It is a grafted plant.
The tree was planted on Dec. 20 (my birthday), 2008.

I cannot tell you how easy it is to grow, but having tasted one for the first time today, I can tell you it is delicious. Mine was a Sunkist branded fruit given to me by someone. It has a very thick, easy-to-peel skin and the membranes between sections are thicker than those on a grapefruit. Considering my fruit was still more green than yellow, I expected it to be tart, but it was sweet and delicious!

My tree was grown from a seed I brought back from Japan in 1984. It has survived temperatures as low as 15 degrees F at my home in Long Beach, Mississippi since then. It fruits every year with delicious fruit that is ripe beginning in December. The thick skin protects the fruit from occasional frosts and light freezes. The tree survived Hurricane Katrina on August 29, 2005.