Orange Trees
Q.

HOW TO CROSSBREED ORANGE AND GRAPEFRUIT

Zone HOUSTON, TEXAS | Anonymous added on December 29, 2017 | Answered

PURCHASED A HOME WITH ORANGE/GRAPEFRUIT TREE IN BACK YARD. WE WOULD LIKE TO KNOW HOW TO GROW ANOTHER TREE. WE LIVE IN hOUSTON

A.
A.Answers to this queston: Add Answer
Downtoearthdigs
Certified GKH Gardening Expert
Answered on December 30, 2017

It should be possible to cross-pollinate an orange with a grapefruit and produce seeds, because the grapefruit is itself a hybrid of an orange and a pomelo. Follow these instructions to hand-pollinate the trees:
https://www.gardeningknowhow.com/edible/fruits/grapefruit/hand-pollinating-grapefruits.htm
https://www.gardeningknowhow.com/edible/fruits/oranges/hand-pollinating-oranges.htm

You may also need to take measures to prevent the cross-pollinated flowers from beig pollinated by flowers on the same tree. The resulting fruit should be the same as the parent plants' fruit, but the seeds will be genetically different, and should produce a tree with different fruit if you plant them.

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