I know i've read that from seed you can't grow grapefruits in pots and get fruit up here in the colder regions of the united states. My question is that if i were to make a cocktail citrus of sorts is it possible to graft mature budwood to the tree and actually get fruit or is this just a pipe dream?

-smiley

Yes. If you graft mature budwood to the tree you will get fruit from each variety you graft. Fruit quality may not be the best using grapefruit for the rootstock of say oranges, but give it a shot.

In theory you can grow a containerized grapefruit from a seed in the northern regions of the USA and obtain fruit. Although it is possible, in reality it is very difficult. Personally, I have never seen an indoor container grown seedling grapefruit, that spent winters inside a residence ever fruit. But to answer your question. Yes, you can use a grapefruit tree as the root stock to produce a citrus cocktail tree. You would only need to let the grapefruit grow large (tall) enough, so that the tree produces the number of side branches required, to bud all the varieties of citrus you wish to grow. Know, that grapefruit is not the ideal rootstock for a cocktail tree, as grapefruit used as a root stock tends to produce rather bland tasting fruit. - Millet

i meant grafting the grapefruit onto the other tree not the other way around. sorry for the confusion, and thanks for the speedy reply

-smiley

That should work-- I put 3 different Gft on my lemon when it was just 3 yrs old--one bud flowered almost as soon as the bud broke and produced 3 grapefruit. I have had several grafts that bloomed almost as soon as the bud broke and produced fruit on limbs that were less than 6 inches long--satsuma, Page, Meyer, limequat, Ponkan, ruby red gft, Kimbrough.

was this a potted cocktail or just the big one in the yard?
but that does sound like it could work.
thanks again for the speedy reply

-smiley

Yes, you can graft/bud ANY type of MATURE citrus varieties onto your cocktail tree up north, and receive fruit, grapefruit included. - Millet

again thanks for the info. now i have much to ponder.

-smiley