Re: Convolvulus arvensis -- oh lucky day!

At 09:11 PM 12/30/03 +1300, Tony and Moira Ryan wrote:

Actually there is one which is effective and that it Dicamba (which has been sold here as Woody Weedkiller). On certainly needs to be pretty careful with it though as it will kill just about anything else as well. The safest way to use it is to unwind shoots and immerse the tips in a bottle or can containing a solution of it. This must be arranged so it cannot fall over and spill the stuff on the ground. In a few days it will translocate into the root and kill it. I have also seen someone succeed with a double strength Roundup solution use in a similar manner.

I'm not sure I understand this correctly -- do you mean that you have one can per shoot (or cluster of shoots within reach), and that you dip them in the can leave them in the can overnight?  I think I would need thousands, or maybe tens of thousands of cans!  Or do you just dip them in for a second or two?

...I've tried black plastic before, with no success after three years of continuous coverage. 

I can confirm it is untrouble by plastic, as it simply spreads out further until it can get its head up again.
...
just one other possibility. If your climate is suitable and there are no valuable plants in the area what about trying soil sterilization by insolation next summer?

Is that different from covering with plastic?  I had thought they were different words for the same thing.

I saw a reference to vinegar, too, when I did a Google search.  Like your experience, it was an unconfirmed rumor, but might be worth a try.  Anything might be worth a try :-).

Thanks much,
-- Susannah
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