Rootstock Bud 9
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Dwarfing rootstock resulting from a cross between M.8 x ‘Red Standard’ (Krasnij Standard) from Russia. B.9 has been widely tested and is used commercially throughout the U.S. It is slightly more dwarfing than M.9 and is slightly more productive.
Other traits of note: Very early precocity; very winter hardy; little suckering; requires support; adapted to well drained soil; very resistant to crown rot; more fireblight resistant than M.9.