Apple root stock recommendations

[Orange120OD]

Are there any apple root stocks good for zone 7A that won’t require staking, but can be maintained around 20’ tall? I’d love to know if such a roostock exsists.

[krismoriah]

MM111

https://www.centuryfarmorchards.com/rootstock/rootstock.html

[Orange120OD]

How bad are burr knots on the MM111? Any way to prevent or control them?

[DroppingFruit]

Free standing dwarf rootstocks?

I think the last apple tree I bought was in 1998. Most of the remaining apples here are on M26, are at the top of the slope, and exposed to wind… never needed staking/trellising, but numerous trees on M9/M111 leaned 45 degrees or more, requiring me to jack them back upright and prop with concrete blocks, big chunks of Osage Orange, etc. Two of the M26 sucker fairly profusely, so I just tear out suckers, pot them up, and graft onto them for outplanting.

Ive been reading about m26 lately… but m26 s just like 10 foot tall

[MikeC]

I second the M111 rootstock. Works great for me here.