Author Topic: spider mites  (Read 1783 times)

Jason E

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spider mites
« on: July 23, 2012, 09:51 PM »
Hello all,

Was inspecting one of my black pines and noticed some flecky discoloration of the needles. Upon closer inspection saw some very fine webing. Pretty sure it's spider mites.
 I sprayed it all pretty good w/ a strong jet of water. Was wondering if any one had any suggestions. Was thinking about a soapy solution in a spray bottle application as well.

any suggestions appreciated.
 

cbobgo

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Re: spider mites
« Reply #1 on: July 23, 2012, 10:10 PM »
i've had good luck with neem oil.

- bob
 

Jason E

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Re: spider mites
« Reply #2 on: July 23, 2012, 10:24 PM »
thanks Bob. I'm going to try that, looks like most garden centers carry it.

jason
 

jtucker

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Re: spider mites
« Reply #3 on: July 24, 2012, 11:42 PM »
I've also heard advice from several more experienced artists to re-apply the insecticidal soap every day and a half or so in order to kill both the current round of bugs AND the next round of bugs whose eggs have already been laid by the ones you're going to kill now. Every pest has a different life cycle, but a few rounds of insecticidal soap every other day generally helps me get over the spider mite blues...
 

Jason E

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Re: spider mites
« Reply #4 on: July 25, 2012, 01:30 AM »
thanks j, I did an application of incecticidal soap today, will follow up w/ another.
 Seems to be only tree w/ mites at least.
Of course it is one of my farthest along in developement ::)

thanks again,
Jason
 

John Kirby

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Re: spider mites
« Reply #5 on: July 25, 2012, 06:15 AM »
Avid, Kontos and and water on the foliage during the day to reduce the dry environment that the little buggers require. If you only have a few the soap/neem can work, as can inverting and submerging in water (with a little soap in it) of a few minutes, doesn't work well on large bonsai.......
 

Jason E

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Re: spider mites
« Reply #6 on: July 26, 2012, 11:27 PM »
thanks John,
wow those are some spendy insecticdes.
the soap and the good jetting when first noticed seems to have worked so far, will reapply once or twice to be safe though.

jason
 

Owen Reich

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Re: spider mites
« Reply #7 on: July 27, 2012, 07:09 AM »
Good miticides are worth the money.  Plus, a small bottle will last you a super-long time.  Most miticides are for a specific life stage (enstar), so spraying once will kill most of them but a repeat application is advised if you use the same chemical.  Mites are no joke as they reproduce alarmingly fast under the right conditions. 

I suppose it really depends on the number of plants you have.  But, a valuable tree is a valuable tree.  Soaps and Neem oil knock 'em down, but not out for good in my experience.  My experience has been that infestation of mites and other pests is a given on pretty much everything alive.  It's when something gets stressed that severe infestations occur (for mites).  Take a few plant pathology and entomology courses and you see the world as a bit of a battleground.  For bonsai, a branch can be crucial to the design so I do not take any chances; systemic insecticides for borers in Early Spring, miticides in summer on conifers, etc. etc.

 

John Kirby

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Re: spider mites
« Reply #8 on: July 27, 2012, 08:03 AM »
Owen, thanks for the follow up. Three things that have always gotten me in trouble when I try to cut corners and save a buck or two:
1. Growing media- regardless of the components you use, use the best quality you can obtain.
2. Fertilizer- use good quality and adequate amounts at appropriate times.
3. Pest control- whether bugs, fungus or weeds, use the optimally effective treatments, and understanding a little genetics and evolution, rotating treatments across a spectrum of active agents and/or life cycle stages as well as maintaining a local buffer population (I don't treat most of our yard trees for common non life threatening bugs and stuff) to leave susceptible individuals in your gene pool, tremendously extending the effective life of useful treatments.

Yes it will cost a good deal up front, I have suggested that clubs pitch in and pool their resources to buy the top 3-4 treatments for the common local problems, aka mites for example in hot dry places, then it doesn't sting so much.
« Last Edit: July 27, 2012, 08:07 AM by John Kirby »
 

Jason E

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Re: spider mites
« Reply #9 on: July 27, 2012, 06:16 PM »
thanks guys for the additional info, very helpfull.

jason