[thistlemissle]

I recently moved onto a 5.2 acre ranch, where I plan to base my business (cactus propagation) from. However I'll be fighting with the Vinca for years to come. I can handle the Ivy, but what do I do about the vinca, in order for it not to come back next spring? Burnpiles, Cultivating the soil, anything organic? I've taken to cutting off all watering to those "problem" areas. But I was hoping somebody may have a better solution for my 'Vinca Invasion' PS- my first post was rather 'bullheaded' i apoligize...darn that scotch!

[tchilds]

We use Horticultural Vinegar. It may take several applications as it does not translocate, but we have great results - becarefull as it will kill the other plants that get sprayed - www.bradfieldind.com
will let you find a US distributor - and we can supply in Canada -

[trees]

I've never understood the vinegar approach. What exactly makes this a more environmentally friendly solution as an herbicide? All it does is acidify the soil to the point where NOTHING can live. I don't get it. I'm all for the organic approach when it makes sense, but judicious use of commercial herbicide makes sense to me in this case. Kind of like homeopathic medicine. It's fine for general wellness or small acute illnesses, but when you've got a real problem, go to the freaking doctor and get a prescription for something!

Cut the stuff back, then when it comes up, hit the new foliage with a concentrated RoundUp. Quick, easy and RoundUp is not really all that bad. You might even go with something stronger...

[tchilds]

The vinegar does not increase the acidity in the soil unless you drench with it and there are no reasons to do so - We apply Vinegar to an annual and it is often killed the first time - within hours as opposed to the use of roundup which may take upto 10 days -
All the vinegar is is 20% acetic acid and a little Yucca added as a sticker - we do not need to post as we do with Round up and there are no concerns from the homeowner or neighbours