Re:Weedy Nectaroscordium species in Calif?


This question may have been answered previously, but
can anyone tell me the species name of the
Nectarocordium which is the pernicious weed here in
both northern and southern California?  It appears to
spread most readily by bulbils, as it spreads
vigorously even when not allowed to flower, and the
flower itself is very nondescript in appearance, with
the foliage on young plants similar in appearance to
chives, and older bulbs having taller and thicker
leaves to perhaps 12~14" length.  It is very difficult
to eradicate, as even "Roundup" doesn't appear to
phase it. (Similar to Oxalis pes-caprae).

I'd appreciate any advice on how to eliminate it, as
well as an I.d. of the species.  I assume this weed is
familiar to the person originally posting this thread,
and may account for the fear that this genus can
strike   upon a Californian gardener!

On a similar note, I was wondering if the White
Morning Glory species which can be so rampant in the
Seattle area is Ipomoea alba?  I saw this Ipomoea
growing everywhere as a weed while visiting Seattle
last week, and forgot to ask the locals what species
it was.  We never see this as an escapee here in the
SF Bay Area, and I assume it can't survive our longer
rainless summers here.  Does anyone in the Seattle
area know what this might be?  The flowers were open
during the day, and it appeared to grow equally well
in both sun and rather deep shade...

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