Citrus > Cold Hardy Citrus

Low grafting vs. high grafting in citrus

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dk citrusdreams:
What provides better winter hardiness for the grafted variety: Low grafting on Citrus Trifoliata or high grafting on Citrus Trifoliata?

poncirsguy:
I am wondering too.  I have always very low grafted because my grafted Fukushu kumquats on Flying dragon grow 2-3 times faster than the ungrafted flying dragons.  Even my Meiwa kumquat on Flying dragon grows a little faster than flying dragons alone.

caladri:

--- Quote from: dk citrusdreams on January 20, 2026, 12:54:49 PM ---What provides better winter hardiness for the grafted variety: Low grafting on Citrus Trifoliata or high grafting on Citrus Trifoliata?

--- End quote ---

The consensus is generally high grafting; I'm curious why you ask, as you seem familiar with the distinction. Have you encountered any sources commending low grafting?

dk citrusdreams:
Someone asked me. When I search on the internet, I only find contradictory information. I personally don't think it makes much of a difference. I'm asking because maybe there is someone who does have the answer from their own experiences and can explain why that is.

kumin:
I've high grafted on Poncirus. When the Poncirus understock remains undamaged the scion is positively influenced. If the Poncirus understock is compromised the scion is less to survive. Low grafting exposes less rootstock to severe cold, perhaps assisting in Scion survival.
Having tried both techniques, I'd give a slight edge to high grafting, as it appears to have a slight influence towards scion precocity. Nevertheless, the hardiness of the scion cultivar is likely of greater importance than adherence to either technique.

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