Parent Washington Navel is a sweet orange variety dating back to the late 1800's. Visited the tree in Riverside that is 135+ years old. It's actually a California historic landmark. Budwood originally came from Brazil. Was propagated in Washington DC and when Tibbets of Riverside California received his propagated tree from Washington DC Dept of Agriculture, he named tree "Parent" Washington Navel. C-35 is a citrange rootstock quite common with navels. Reduces the size of the tree while not limiting the production. UC developed the rootstock. Advantages: Phytophthora tolerant,drought tolerant, nematode resistant, cold tolerant,tristeza tolerant,good fruit quality. Disadvantages: dislikes clay soil,sensitive to high salinity All in all, you should have a nice orange tree bearing for many generations. I'm unsure where you live, but your zone 7-8 I'm guessing is container citrus growing of which I'm not that familiar. But the C-35 should be advantageous. Pam

My Oroblanco seems kind of a little sickly as well. It might be that since Oroblanco has more pomelo parentage in its genetic pool than your average grapefruit, that might be making it a little less hardy in less than optimal climates when the winter temperatures start dropping. You see, Oranges, Grapefruit, and Oroblanco are all on a continuum between mandarins and pomelo. Genetically speaking, Orange is about 25% pomelo and 75% mandarin (it is believed). Grapefruit originally resulted from a hybrid between pomelo and Orange (and so very much resembles pomelo in appearance and flavor, though there are distinct differences). And finally, Oroblanco is a hybrid between Pomelo and Grapefruit. So you can see that it is nearly a pomelo (although technically it is considered a grapefruit). Anyway, the more pomelo parentage a hybrid has, generally the less cold hardy it will be. Before the advent of grapefruit, there were very few parts of the U.S. where pomelos could have been successfully commercially grown. That is probably the reason why grapefruit has become so well known in the U.S. and pomelo hasn't. I'm in no way suggesting you can't grow pomelos or Oroblanco where you live, I'm just suggesting a possible reason they may not be doing as well as the other citrus. In fact, summers are so long and hot in Indio that it is one of the few parts of the country where pomelos will be able to ripen to maximum sweetness.

Steve - Congrats on the getting from graft to flowering in a season! I noticed some of my citrus are going through another small flowering cycle too. Hope you can get at least one fruit from that as a prize. :-D

One green world is by far the best choice. There are some minor compatibility problems between Fukushu and the C35 rootstock 4 winds uses. Flying dragon will add 5 F added hardiness to your tree and will reduce the root pruning needed, if potted, by half. The speed at which a kumquat grows matches the speed of Flying dragons growth