City,
I your asians did not do great they may be normal callery. The callery has not been invasive in our area for several reasons. Mostly because the climate here is non conducive but I have saw new trees recently that make me believe someday it could happen. More people bring in ornamentals every year that make new flowering pear species. Your using your trees for their intended purpose which was as rootstock as do most of us who grow fruit. Plenty of nurseries still sell all the trees mentioned FRUIT TREE SEEDLINGS | Willamette Nurseries rootstock clonal seedling fruit tree ornamental seedlings . We need to use something for rootstocks and BET is the best choice for asians. Callery is a great choice for euro pears. Callery may be the best choice. Eventually those who grow those rootstocks as ornamental flowering pears will develop seedlings. Those seedlings when they occur here and I see them I graft them over. Land owners should kill those seedlings or graft them over. There are no laws against people planting ornamental pears to my knowledge so with that said large subdivisions have thousands of those ornamental pears in an area… I ordered 300 bet rootstocks and 100 callery this year and will graft them over this year or next. Some.e nurseries plant thousands. Used for their purpose as rootstock they produce tons of fruit and feed lots of people. My point was with all of this is when the government brought the callery in they did good by solving the problem of our need for rootstock that didn’t get fireblight. Ohxf pear rootstocks were another major break through for agriculture because they don’t get FB . If fireblight resistance rootstocks were not developed there would not be a pear industry today.
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