How Do I Kill Ranunculus ficaria

Adam Fikso
Thu, 15 Apr 2010 12:26:12 PDT
Hello Judy--I don't know if this would work but ordinary household ammonia 
in a spray bottle will kill ANY  non-woody plant I've ever tried it on. 
Within hours.  One must be very careful to be sure that the spray does not 
touch  or drift to any other nearby desirable plants.

Other plants can be planted in a few days as ammonia  is extremely volatile 
and dissipates quickly.

 NH4 ion is toxic to plant life in general. If it's too windy in your area, 
consider using a paint brush.  Avoid breathing the fumes yourself.  Try it 
in a limited selected area.

----- Original Message ----- 
From: "Ina Crossley" <>
To: "Pacific Bulb Society" <>
Sent: Thursday, April 15, 2010 12:52 PM
Subject: Re: [pbs] How Do I Kill Ranunculus ficaria

>I had a weed like that and it took 6-12 months in sealed plastic rubbish
> bags to kill it.  Eventually finished up with nice friable soil in the
> bags.........
> Ina   Auckland NZ
> On 16/04/2010 5:48 a.m., Judy Glattstein wrote:
>> Desirable plants seem easy to destroy. Weeds are more difficult. Lesser
>> celandine, Ranunculus ficaria, will likely survive a nuclear blast.
>> Friends at the Leonard J. Buck Garden in Far Hills, New Jersey tried
>> spraying with Roundup 3 times in one season . Slowed it down but did not
>> destroy it.
>> I dug up several gallons, complete with soil around the tiny tubers. Put
>> in a heavy duty black plastic garbage bag, then placed in full sun on an
>> asphalt driveway. After close to a week the leaves are still green and
>> vibrant.
>> Not allowed to dispose of in trash - also envision it carpeting the
>> landfill transfer station.
>> Afraid to feed it to my neighbor's sheep who get garlic mustard and
>> multiflora rose. If not completely devoured the lesser celandine would
>> escape and carpet the pasture, then spread to cover the neighborhood.
>> All suggestions gratefully received. And no, I don't think it is
>> suitable for the dinner table.
>> Judy
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