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Mon, Aug 27, 12 at 21:39
| Was thinking about trying this, and was wondering if anyone on here has done this? I read about it on the ARS Facebook page.
http://jack-rosarian.blogspot.com/2012/08/potassium-special-k-ration-f east-for.html?m=1 |
Follow-Up Postings:
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- Posted by wirosarian z4b WI (My Page) on Tue, Aug 28, 12 at 0:01
| I read that blog article & it is something that "old" rose growers recommended for improving winter hardiness but I don't do it & my roses come thru my Z4 winters just fine. |
Here is a link that might be useful: Potassium & winter hardiness
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| I might, when feeding the tomatoes, throw some extra on the roses, as potassium can help to 'harden and ripen' woody plants but I don't believe I would rely on this if there was any prospect of overwintering problems...but, not being a masochist, I have pretty much either abandonned or lost any plants which are not going to survive an East Anglian winter - admittedly laughable compared to the extremes of north american winters. |
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- Posted by mike_rivers z5 MI (My Page) on Tue, Aug 28, 12 at 10:40
| Professor Linda Chalker-Scott's article, linked in Wirosarian's posting, is enough to convince me that adding extra potassium to increase winter hardiness isn't worth the effort to test. If you decide to try it anyway, I would not use potassium muriate as the source of potassium as recommended in the blog linked in the first posting. Potassium muriate is potassium chloride and adding excess chloride to soils is usually a poor idea. It's for that reason that most reputable rose fertilizers use potassium sulfate and related compounds rather than potassium muriate as the source of potassium. |
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