RE: sorrel/oxalis
- Subject: RE: sorrel/oxalis
- From: J* G* a* O* P*
- Date: Thu, 6 Jun 2002 00:47:31 +0100
The message <50E17FF6DF80E446AE25A8369C18C497038C79CB@Athena.schwabe.com>
from "Saxton, Susan" <SSaxton@schwabe.com> contains these words:
> No, more like a big polygonum leaf, only not pointed on the end. I've
> never let them flower so I don't know what they send up.
> The white roots are thickish at times and travel feet and feet across
> (under ground) and then every once in a while there is a cluster of
> small roots. The greenery shoots up everywhere, with rambling or
> clustered roots. The roots are 12-16" underground and even cling
> tenaciously to the cement foundation of the house (I literally have to
> scrape them off with the shovel to dislodge). I have spent HOURS
> weeding it out, trying to trace and get every small piece of root, but
> it keeps coming up. I seemed to have acquired it around the time I
> got a load of horse manure -- but got it no where else in the garden
> but this small bed so that may have been coincidental. I have tried
> Round up to no avail.
It sounds a bit like Persicaria amphibia which I have trouble with and
which is found in Europe and US. It can grow in ponds but is much more
trouble as a weed in ordinary soil. The roots go down and down like the
ones you describe. There are pictures at these sites:
http://pojma.narod.ru/-photo1gelo.html
http://www.inra.fr/hyppa/hyppa-f/polam_fh.htm#Description%20de%20la%20plante%20adulte
http://plants.usda.gov/cgi_bin/plant_profile.cgi?symbol=POAME
On the other hand, I would say the leaves are fairly pointed. Not
japanese knotweed? I missed the beginning of this thread, so may have
missed a fuller description.
Janet Galpin. UK
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