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slugs & snails

  • Subject: [ferns] slugs & snails
  • From: "Redman, Julia" <jredman@tigr.org>
  • Date: Tue, 27 Jul 2004 14:42:20 -0400
  • Content-class: urn:content-classes:message
  • Thread-index: AcR0CXJDmU0GgGB+R1CNmHmxEVNhNQ==
  • Thread-topic: slugs & snails

Hi everybody,

The following message recently popped up on the orchid guide digest.  It
discusses another approach to evicting snails that I thought some of you
might find interesting.  Now, orchids have a thicker cuticle than ferns,
so this might be too strong for ferns.  But it is still interesting and
maybe worth a test.



::Copied message::

Date: Mon, 26 Jul 2004 13:02:28 -0700

From: Monica L Jones <mony1@juno.com>

To: orchids@orchidguide.com

Subject: [OGD] Re: physan/RD20 and slugs

Message-ID: <20040726.130228.3756.0.mony1@juno.com>

Content-Type: text/plain

MIME-Version: 1.0

Content-Transfer-Encoding: 7bit

Precedence: list

Reply-To: "the OrchidGuide Digest \(OGD\)" <orchids@orchidguide.com>

Message: 7

> As long as the topic of Physan is being discussed......... Now that my

> paphs are outdoors for the summer, I'm adding 1/4 tsp per gallon of

> RD20 (ammonium chloride, like Physan) to my usual


>  At any rate, I am wondering if RD20 can also act as a slug


> I dump the RD20 solution I use to soak seedlings in while repotting, I


> that the earthworms literally fly out of the soil......slowly followed

by the

> slugs.

> My guess is that adding RD20 to the fertilizeer will


> slugs and snails out of the mix. Has anyone had experience with this

> aspect of quat use?

I haven't been using ammonium chloride, but I have an idea why the slugs
are reacting to it the way they are!  The worms may not like the
saltiness of the water, but I don't know how sensitive they are.  I
sometimes see worms in the yard flying out of the ground when I dump
just plain water....

My slug and snail killer of choice for the last 10 months or so has been
a 50/50 mix of water and ammonia (whatever the concentration is from the
grocery store). This was recommended in a book from the California Ag
Extension office, and boy does it work!!  A squirt or 2 from a spray
bottle, and the slimy little buggers dissolve- just like using salt,
only no harm to plants!  The only side effect is lots of empty snail

So, the chemistry is NH3 + H2O <---> NH4+  + OH-

and  (NH4)Cl ----> NH4+  + Cl- in water (please excuse the crude
equations).  I imagine the slugs aren't being killed by the dilute
solution, but dislike it anyway!  Maybe try catching a slug and drip
some of the solution on it.  If it kills him, then you could just dip
your pots in it to rid them of slugs!

Monica Jones

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