Organic Funicides - Sulphur, Copper, Neem & Baking Soda

[Sharon's Sheepdogs]

I came across the following site which contained a very informative article regarding "Organic Fungicides." Although it does not specifically discuss orchids, it addresses the home gardener regarding the use of Sulphur, Copper, Neem Oil & Baking Soda which are also used to treat orchid diseases. Thought it would be good to share:

http://www.extension.purdue.edu/extmedia/bp/bp-69-w.pdf

[WhiteRabbit]

interesting

[silken]

A good read. Thanks for the info.

Just a tip about your username. You might want to change it to something other than your e-mail address. Leaving it as is could result in spam to your e-mail address.

[ALToronto]

I thought copper was a big no-no with orchids. Could somebody please clarify?

[Ordphien]

Originally Posted by ALToronto

I thought copper was a big no-no with orchids. Could somebody please clarify?

I think that's dendrobiums. In not sure though.

[DavidCampen]

I use Bonide copper soap on my cattleyas, and laelias and a couple of stanhopea and gongora with no ill effect.
Bonide Liquid Copper, Bonide Liquid Copper Fungicide Concentrate
This product is 10% copper octanoate.

It is said that copper is toxic to dendrobiums and bromeliads and stanhopea and gongora. I have kept the copper soap away from my few dendrobiums. It has not harmed my stanhopea or gongora and the other weekend I accidentally sprayed a tillandsia (spanish moss) with copper octanoate, I hosed off the spanish moss later and it has shown no ill effects.

I suspect that the Phyton product which is copper sulfate may be more phytotoxic than the Bonide copper octanoate.