Quote:
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Originally Posted by GB_Bonsai
No. Periodic application is good as a preventative measure.
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I agree..
You won't notice spider Mites until its too late.
FOR THE NEWBIES
From an earlier thread:
Spider mites are very tiny bugs (about this size >
. <) and will kill your trees before you know that they are there! I've always use a preventive insecticide and fungicide treatment every 4 to 6 weeks during the growing season, here that can be up to 10 months. With indoor growing, insect inspection and prevention is on going year around.
When inspecting for insects on trees, the best way to find the smallest of insects (red spider mites) is put you tree over a piece of white paper and tap on all the branches that you can, this will knock off some of the little critters onto the paper, if you can mash the specks with your finger and if the tiny specks smear then it was a small bug that needs to be eradicated.
Kelthane was taken off the market by the EPA sometime in the late 80’s because Kelthane was said to be a derma-toxic carcinogenic and would just about kill everything.
Orthenex used to have Kelthane in it (70s & 80s) and The EPA took Orthenex it off the market too. Now, Orthenex is back on the market using another mite-icide,
IMHO it’s the best you can use!
http://www.google.com/search?hl=en&...G=Google+Search
http://www.ask.com/web?q=orthenex&s...src=0&o=0&l=dir
I will say that everybody has their own methods of treating for insects.
Having several species (with several of each)
I have to treat on a preventive method. I try to spray an insecticide, mite-icide and fungicide (all in one, also can be mixed with fertilizer too) at least every 4 to 6 weeks during the growing season. If an infestation is found, I treat accordingly too. I use a couple of brands of
systemic organophosphate insecticides.
I found that Ortho makes a couple of types that are very effective for my problems “Orthenex” & “Systemic Insect Killer”. Both have Insecticide, mite-icide and fungicide in it and they both take care of all my problems, without using Neem oil, Kelthane, or Malathion ~ see 1- 5 below.
Don’t trust any organophosphate they all can be carcinogenic.
Always wear protective gear (PPE) when using them!
Always read and follow the labels!
I have seen that Kelthane is back on the market (
hum strange huh, EPA) this is the best to combat spider mites on junipers and serrisa foetida, but not on elms…see below.
For example, coming from a long time user(not abuser, lol), with these chemicals I have experienced...
1) Do not use Neem oil on any type of elms, it will defoliate them and can kill them.
2) Do not use Kelthane on any type of elms, it will defoliate them and can kill them.
3) Do not use Malathion on Buttonwoods it can kill them.
4) Do not use Neem oil on Boxwoods it can kill them.
5) Do not use Disyston on Fukien Tea it can kill them.
Having several quantities of many types of species with different types of insects attacking them, “Ya gotta keep your guard up”. Just to name a few problems when growing bonsai down here in South Texas.
* Spider mites can attack very fast and this happens all growing season.
Has anybody lost a juniper or snow rose from spider mites? Of course you have if you been doing bonsai a while. Red spider mites will kill them almost before you can notice they are there. You’ve heard “if you see the signs (webs) it’s probably too late”.
* Cuban Laurel Thrips can and will attack several different types of Ficus during the growing season.
* “The Boogie worms” (not identified yet, little green warms) that
ONLY attack bougainvilleas during the summer.
* White flies, aphids, scale, grubs and snails (not insects, but still a pest) come and go during our growing season.
Be glad you’re not down here doing bonsai…sometimes we say
BONZAI to the critters!
LOL
Good hunting,
redhawk