Viewing post #420098 by zuzu

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Jun 5, 2013 2:02 PM CST
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Name: Zuzu
Northern California (Zone 9a)
Region: Ukraine Charter ATP Member Region: California Cat Lover Roses Clematis
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That's illogical, Toni. You say it was discovered "in fields of multiflora roses being grown for use as rootstocks." If they were being grown for use as rootstock, they must have been own-root roses themselves.

Own-root roses are just as susceptible, if not more so in view of the fact that R. multiflora, which is always own-root, and the Knock Out roses, most of which are own-root roses, are the ones that are being affected most.

I wonder why they were growing multiflora for rootstock in Texas. As far as I know, only the Canadian nurseries (Hortico, Pickering, and Palatine) use R. multiflora as rootstock. The rootstock of choice in Texas is Dr. Huey, and possibly R. fortuniana.

Last edited by zuzu Jun 5, 2013 2:03 PM Icon for preview

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