The OHxF series of rootstocks originated from crosses made more than 70 years ago by Reimer at Oregon State. Reimer's work was continued by nurseryman Lyle Brooks and by researchers at Oregon State. OHxF 333 A semi-dwarfing pear rootstock. Its resistance to fireblight, collar rot, woolly pear aphids and pear decline make this a very healthy stock.
Trees are very productive.
Resistant to fire blight, crown rot, woolly pear aphids, and pear decline. A vigorous pear rootstock. Standard size, but more precocious and productive than seedling stocks. Appears to be especially valuable for Asian pears. The industry standard.