| Use Natural Weed Killers? |
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But as Dr Karl says "All things are poisons, what matters is the dose". Killing Cape Weed in the graden."Natural"Richgro - Beat-a-weed -(acetic acid/vinegar and sodium chloride/salt) more information This product is rated as having a low impact on the environemnt by SGA Vinegar (acetic acid, diluted) (Coles smart buy white vinegar, packaging did not state dilution!) - " Most commercial white vinegars are 5% acetic acid solutions" - vinegar information Natural may be a misleading term - snake poison is natural, but I would't eat it! Too much salt and too much acetic acid will still not be good for the vegetable garden soil. I have no information about salt or acid being residual in the soil and causing problems. I can't image that any frog would like either of these natural products on its skin or in its water. "Unnatural" Glyphosate (N-(phosphonomethyl) glycine)- more information This chemical becomes inactive when it comes in contact with the soil - and how long this takes will depend on the type of soil, but it is safer than many other chemical weed killers. It is considered to be "harmful" to frogs. ResultsBefore Vinegar After Vinegar (24 hours) - but after a week the weed had begun to grow back  Before "Beat-a-weed"  After "Beat-a-weed" (24 hours) - after a week, leaves have been killed, but stems still look active.  Before Glyphosate  After Glyphosate (24 hours - this enzyme inhibitor takes about 1 week to work) After a week, all dead now - after a month gone.  |
