Pear Slug!

Greetings,
First post for me. I live in Los Osos, Ca. Zone 10 (hence my name LowChill!).
I’ve been growing apple/asian pear trees for about 4 years now. I have them espaliered along the fence in my back yard. They are doing quite well, but a few years ago I noticed a strange “slug” on the asian pears. They don’t get in the fruit, but do a good number on the leaves. After further research revealed that they are pear sawfly larvae.
So my question is…how do I get rid of them? I haven’t sprayed my trees yet, but guessing I need to. What would be the best treatment for this pest?
thanks!
Steve

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Yup, we have them terribly here in both N and S California. Most of their damage is cosmetic unless you have really high populations, but Spinosad will do them in. Supposedly, you can hose them off, but it takes a pretty strong spray, and I felt like I was wasting a lot of water trying to hose them off. Contrary to their name, they are actually not a fly, but in the wasp family, interestingly. Their larvae are horridly ugly, like little slimy slugs, ick. They get after both my pears and my cherries.

http://ipm.ucanr.edu/PMG/r603302211.html
http://jenny.tfrec.wsu.edu/opm/displaySpecies.php?pn=210

Patty S.

1 Like

Thanks for the reply. After reading more about them…it sounds like you can’t treat them before, but after they emerge?
Is the spray you suggested ( Spinosad) organic? I haven’t had to spray my trees yet.
Thanks!
Steve

Spinosad is organic. Spray when you see the larvae. You can use a sticking agent in combination (I like to use Neem), and my spraying is much after blossom time, so no worries about bees or other pollinators.

https://www.amazon.com/Monterey-Garden-Insect-Spinosad-Concentrate/dp/B002BP12LI/ref=sr_1_1?ie=UTF8&qid=1487874363&sr=8-1&keywords=spinosad

3 Likes

OK…great! So do you mix the neem into the spinosad? What kind of ratio do you mix it with?
thanks!!

I mix up the Spinosad and the Neem separately, to their correct ratios per label, then add them to my sprayer. I use regular Neem, not raw Neem.

https://www.amazon.com/Monterey-70-Neem-Oil-16oz/dp/B000I1O7YQ/ref=sr_1_1?ie=UTF8&qid=1487876235&sr=8-1&keywords=neem+oil+monterey

Patty S.

Thanks a bunch. I just bought both!