Is soncoya a comparable rootstock to other Annonas???

[Nayelie321]

I just got a soncoya fruit to see if I like it. I didn’t care much for the taste unfortunately. Anyways, I was left with around 25 seeds which I’m contemplating germinating or not. I might grow one tree to maturity just as a collection piece. However I was wondering if soncoya is a good Rootstock for any other Annona species. I saw a few old posts here but no answers except for one individual saying they thought they got a geffner atemoya on soncoya rootstock just to discover it wasn’t. So does anyone know their comparability?

[Guanabanus]

Compatibility:  largely untried.  Would be a very hardy, robust root-stock, If compatible.

Said to be usable as a root-stock for Soursop, but I haven't knowingly seen any producing trees of that combination.

[Mikey]

Soncoya don’t do well with frost.  Idk if that makes it less hardy as a rootstock.

[Guanabanus]

Large, well-established trees, growing in high-Calcium soil in the Homestead, Florida area, survived 25-degree F. freeze in 1984.

I have no info on cold-hardiness of tender seedlings.

[Ethan]

Soncoya scion grafted onto cherimoya rootstock seems to take well. Unfortunately, the Soncoya is more vigorous and eventually outgrows and kills the cherimoya rootstock. Based on that, I'd guess you could graft cherimoya compatible scions like cherimoya, atemoya, sugar apple, soursop and Senegalensis. You might get severe "elephant foot" though?

Good luck!