When the seeds germinate, and before they set their own seeds, more Glyphosate! When I say regularly I mean regularly, at least fortnightly if needs be, but it soon eradicates it.
If you use a good quality Glyphosate based systemic weedkiller, a day or two after spraying, the foliage (and potential flowers) can be strimmed off and removed as the killer is already in the system and working its way around in the roots. I use one called Glyphos, mixed with a little washing up liquid to help it 'stick', spray on the Oxalis and within 5 days they're already wilting and dieing (during the summer months). I think Oxalis succumbs to it quicker than anything else I have to spray. It's just remembering to get rid of those pesky seeds hiding in the soil that makes it a nightmare to get rid of.
It is classed as one of the most perncious of weeds, all over the world now. It is one of the few which can and does survive the extreme heat of the professional composting regime. We have had seeds germinate in brand new non-peat compost and sadly in a peat based one too.
Thanks for all the advice. Looks like I'll have to re-start my wild flower meadow later than hoped. I agree with the composting comment - this was spread because my compost heap was on this patch & we have ornamental indoor oxalis & the debris had been put into the compost bin. Hey ho ..
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When the seeds germinate, and before they set their own seeds, more Glyphosate! When I say regularly I mean regularly, at least fortnightly if needs be, but it soon eradicates it.
We find that in the days btween spraying and the plant dying it can and does go from bud to flower to seed.
Hi Berghill
If you use a good quality Glyphosate based systemic weedkiller, a day or two after spraying, the foliage (and potential flowers) can be strimmed off and removed as the killer is already in the system and working its way around in the roots. I use one called Glyphos, mixed with a little washing up liquid to help it 'stick', spray on the Oxalis and within 5 days they're already wilting and dieing (during the summer months). I think Oxalis succumbs to it quicker than anything else I have to spray. It's just remembering to get rid of those pesky seeds hiding in the soil that makes it a nightmare to get rid of.
Hope this helps.
-Matt-
Belt and braces, belt and braces.
It is classed as one of the most perncious of weeds, all over the world now. It is one of the few which can and does survive the extreme heat of the professional composting regime. We have had seeds germinate in brand new non-peat compost and sadly in a peat based one too.
Thanks for all the advice. Looks like I'll have to re-start my wild flower meadow later than hoped. I agree with the composting comment - this was spread because my compost heap was on this patch & we have ornamental indoor oxalis & the debris had been put into the compost bin. Hey ho ..