I have a grapefruit that was started from seed, I do not know the variety. It is about 18 inches in height now and pretty healthy. The leaves are like a double leaf, in that there is a smaller section near the stem then a larger leaf beyond that. Currently it is in a 4-6 inch pot indoors, but it is exceeding it's home now. I can't just let it die so I would like to know how to care for it and help it live.
I bought a house with a grapefruit tree that had never given fruit in 7 years. We did not get fruit until 3 years later. But now, 7 years after that, I usually fill at least 15 of those 30 gallon tubs each spring. I take the fruit to school to school for my students and parents to have. I play rock 'n roll all summer long in the back yard while I'm in the pool. I'm sure that's what makes it produce so much fruit.