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Discussion id : 29-965
most recent 25 AUG 08 HIDE POSTS
 
Initial post 25 AUG 08 by Moseby
I have a garden that get's very wet during the winter - I was wondering if there's any rootstock that can help roses not to be to badly hurt by this ie. Rosa palustris - The swamp rose. Has anybody tried this or heard about varieties that are "water" resistant?
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Discussion id : 11-320
most recent 2 MAR 06 SHOW ALL
 
Initial post 25 FEB 06 by Greg Holmes
Can anyone explain the pros and cons of using mycorrhyzal fungus in the soil around roses.
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Reply #1 of 1 posted 2 MAR 06 by Rupert, Kim L.
There aren't any "cons" to their use, only "pros". Should your soil be deficient in them, the rose roots won't absorb nutrients as efficiently as they will with them. If your soil has its appropriate concentration, you probably won't notice any improvement. Therefore, the only drawback to adding them is, if you already have them, you'll be spending however much they cost where you are, for little to no visible benefit. Go for it, it couldn't hurt!
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Discussion id : 11-151
most recent 28 MAR 06 SHOW ALL
 
Initial post 8 FEB 06 by Anonymous-100347
Is anyone working on the problem of oak root fungus? Here in Calif. several counties have this fungus endemic in the soil and while I use compost to be sure there is drainage, eventually or sometimes soon, the plants succumb. I was hoping some newly developed rootstock would be resistant to this.
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Reply #1 of 1 posted 28 MAR 06 by Rupert, Kim L.

So far, nothing with the ability to have roses budded on it has shown any greater resistance to Oak Root Fungus. There have been some interesting results in inhibiting the fungus from progressing by using fresh horse manure. The fungus grows in compacted, soggy, nitrogen deficient soil. Aerating the soil, increasing the drainage and metering the water to prevent the soil from becoming soggy, and the addition of copious amounts of fresh horse manure have seemed to alleviate the problems associated with both Armillaria and Downey Mildew.


The fresh horse manure not only has a great deal of readily available nitrogen (from the urine) but also high doses of bacteria. While I know of no "official" studies regarding the use of the manure for this purpose, anectdotal reports have shown improvment in several gardens where this treatment has been tried.


 

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Discussion id : 251
most recent 12 MAR 03 HIDE POSTS
 
Initial post 12 MAR 03 by Unregistered Guest
What should I do to promote better root growth?
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Reply #1 of 1 posted 12 MAR 03 by Alex Sutton
To promote root growth, you'll need to use a product containing Potassium (or potash). Here in the States, I use an organic product called Roots which can be found in garden centers and is often used by professionals in my area when they transplant trees and have to "guarantee" them.

The key to using Potassium is the pH of your soil. If you don't know the pH then test the soil and find out. Ideally, you want the pH to be 6.5 -- lower than that affects the plant's ability to absorb the Potassium.
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