Being in Colorado, a cold winter state, I must grow citrus inside a greenhouse. Inside the greenhouse I presently have a fully grown Bearss lime tree that produces perhaps 200 or more limes every year. I just don't use anywhere near that many limes. I probably use 10 limes in a years time. As there is just so much room in a greenhouse, I decided to cut out the lime tree and use that space to plant a Valentine Pummelo in its place. Originally, I thought I would plant an orange, lime, lemon, grapefruit, and a mandarin (the four major citrus varieties). Valentine pummelo was not available at that time. The other option is to enlarge the greenhouse from its present 72-feet long to 100 feet long. But the heating bill is already large enough. After replacing the Bearss lime, there will be planted in the ground a pomegranate, ponkan mandarin, a Saint Teresa lemon, Brown Turkey fig, a Valentine pummelo, a lychee, a cara cara orange, a dekopon, a marisol clementine and a marsh grapefruit, (plus a ton of other container trees and plants.) - Millet