Re:aphids on all my CPs

From: David J. Collier, MD (
Date: Wed May 26 1999 - 15:30:46 PDT

Date: Wed, 26 May 1999 15:30:46 -0700
From: "David J. Collier, MD" <>
Message-Id: <aabcdefg1855$foo@default>
Subject: Re:aphids on all my CPs

There are lots of chemical solutions for aphids. Most houseplant
and outdoor sprays work. Pyrethrins and pyrethroids seem to do fine
and are relatively safe.

The best solution I have found is imidacloprid, which is made by
Bayer and sold under a wide variety of brand names. It is a newer
insecticide that is highly toxic to sucking bugs but extremely safe
for humans and animals. This is the active ingredient in Advantage,
which Bayer sells for dogs and cats to get rid of fleas and ticks.
It lasts for a month or more and is safe for cats to lick all over
themselves. Imidacloprid is absorbed systemically in plants and
a single application can last months to years.

Other than Advantage (which costs a fortune), imidacloprid is
supposedly sold in the U.S. as Grub-X to kill grubs. If you can find
it (I haven't been able to yet in the San Francisco Bay Area) it should
work great for aphids as well. Imidacloprid is also sold as "Merit,"
"Provado," "Admire," and "Gaucho," as well as several other names.
Unfortunately most of these products are sold only to farmers and
come in sizes much to large for the average CP grower. Bayer doesn't
have a house and garden brand in the U.S.

Beware of formulations of imidacloprid that include fertilizer.
They could do in your CPs.

David Collier

>I have an aphaid problem that is growing. Could anybody suggest some

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