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Spidermite on Salvias

Posted by robinmi UK (My Page) on
Tue, Dec 1, 09 at 17:50

Has anyone tried the "hotbox sulfume" in attempting to get rid of this most horrible bug???

Thinking of purchasing one in spring, would like to hear any comments about this.

Robin.


Follow-Up Postings:

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RE: Spidermite on Salvias

Robin:

I have problems every year with Datura,Asclepias,Some Salvia etc...I have used Safer "Insect killing soap"
(Potassium salts of fatty acids)it has Seaweed extract in it and is a organic product. Very effective against Red Spider mites(Tetranychus urticae). Do know which Spider mite you have?Is it the European Red Mite?
Art


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RE: Spidermite on Salvias

Yes, it is the European one.


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RE: Spidermite on Salvias

Robin, I'm not sure I'd want sulfur vapors as a mite treatment. The sulfur will eventually oxidize and generate acid. I'd go with the Safer soap. Seaweed extract also inhibits mites, and also feeds the plants. It should not have negative effects on plants.


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RE: Spidermite on Salvias

Robin:
I understand that your mite can be reduced to minimal levels by a spraying Horticultural Oil or a Dormant Oil as it kills the eggs in winter.Then any that survive can be killed by the insect kiling soap.
The European mite overwinters on woody plants Apples,Maples,Roses,etc they will lay their eggs on a Plant that was not infested in the previous summer months.
Another control method is using other insects to eat these
pest. Here is a list of beneficial insects that eat mites :
1)Predaceous mites (Amblyseius fallaus) these last two
mites eat all stages of European Red Mite (Agistemus fleshneri & Zetzellia) they muliply quickly at 21 degrees Celsius . Then other options are Ladybird beetle we call them ladybugs (Coccinella septempunctata)Larva and pupa stages eat more than the adult, they will eat aphids also.Lacewing aka Aphid lion (Chrysoperia carnea).These
have the added benefit of no chemical residues left behind
for you or your pets.
Art


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RE: Spidermite on Salvias

Hi Robin

http://carnations.org.uk/articles/hotbox-sulfume has a few interesting comments.

Greens Horticulture which sells the Hotbox says that it has an unknown effect on red spider mite that seems to put them off their food.

You could try dynamite.

Jim


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RE: Spidermite on Salvias

Yeah!


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RE: Spidermite on Salvias

Tried to send a follow-up, but it got lost.

Were you joking about dynamite, or were you referring to Dynamec, which contains avamectin (probable incorrect spelling)? This is allegedly 100% effective in controlling spidermite, but not available to us amateurs. BUT...may have found a source...will advise!

BTW your lavanduloides is spectacular in the greenhouse, albeit very late.

Robin.


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RE: Spidermite on Salvias

Robin

As it would appear that Hotbox puts them off their food. I thought perhaps you could over-feed them (Dine-a-mite)as another way to beat the blighters.

Hadn't heard of Dynamec but it sounds interesting.

Glad you like the lavenduloides - a small individual flower but such a lovely blue.

Jim


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RE: Spidermite on Salvias

Five years on.....I did manage to obtain Dynamec, but you must be so careful when using this, not to get any spray on your skin, or inhale the vapours. But I have almost succeeded with the expensive predators....which can be obtained via Amazon, forget the name, just google spidermite predators. This seems to work very well, provided the temperature is not below 12C/54F.

Takes a couple of weeks.

Last two years, I have found the Salvias which get most affected are Wendy's Wish, Ember's Wish, dombeyi, fulgens, large splendens, Amistad, and concolor. Also my new Salvia benthamiana.

Capsid bug is another thing...once you see the distorted leaves, the blighters are gone!

Robin.


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RE: Spidermite on Salvias

Has anyone tried neem oil?

Here is a link that might be useful: Neem oil uses


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RE: Spidermite on Salvias

Neem oil has demonstrated a great deal of phytotoxicity for us on Salvias. Same with Safers soap. Some species are OK, others damaged somewhat severely.


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