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London, Ohio

i was wondering out of the scotts season long grubex, the bayer season long grub control, or the bayer grub control with merit granules. which one would be better to add to the pumpkin patch to kill grubs and anything else that tries to est the pumpkin roots
thanks
dan

4/27/2006 2:06:10 AM

Waquoit Mass

kills worms too

4/27/2006 1:41:03 PM

addison Il

Wait it kills worms??? then me and sis are up the poop creek this growing season darn!!!

4/27/2006 5:30:54 PM

Topsfield, Ma.

I hope Tremor weighs in here, but I thought I read here on BP that Grubex does not affect worms...stay tuned!

4/27/2006 8:37:40 PM

[email protected]

Dan,

They are all the same thing & all of the tech material to make them come from the same place though this might change by this time next year.

Forget the Trade names & read the list of active ingredients.

The following are Trade names that I can remember that all contain Imidacloprid in various concentrations & formulations.

Admire
Provado
Gaucho
Merit
Submerge
Confidor
Premeir
Premis
Zenith
Bandit
Grubex (check the label - Scott's is weird)
Marathon
Bayer Season Long Grub Control
Bayer Systemnic Tree & Shrub Insecticide

There may be others but these are the ones I remember.

Imidacloprid DOES NOT KILL EARTHWORMS when used as directed. I've used Merit on the lawn & garden every year since 1994 & I have more & bigger fatter earthworms than ever.

I've also used Sevin to kill Eartworms on purpose (native soil putting green) and they were back in 3 weeks. LOL

Don't take credit for killing worms just because you don't see them. Worms burrow deep every winter when the ground freezes & in the summer when it gets hot. They'll also become scarce during drought periods.

4/27/2006 10:13:35 PM

Chico, Ca

merit did not kill worms in my patch and I was drenching around Italian cypress with the high concentration rates for trees on the label....

4/28/2006 2:20:28 AM

Decatur, IL

Make sure the Grubex, or any grub control product you buy has Imidacloprid as an active ingredient. There are other formulations of Grubex that do not contain Imidacloprid.

4/28/2006 8:56:23 AM

London, Ohio

thanks for the replies
dan

4/28/2006 2:23:30 PM

Phoenix, AZ

What damage can grubs cause? I have found a few in my patch.

I am very worried about killing my worms BTW and am cautious.

4/28/2006 6:23:42 PM

Waquoit Mass

sorry not tryin to get everyone excited i dont use chemicals like those dont take the chance im sure steve knows what hes talkin about goin pretty much organic this year

4/28/2006 6:31:00 PM

Waquoit Mass

any effect on microbial action steve ?

4/28/2006 6:32:05 PM

[email protected]

Most of the damage that we accidentally cause to beneficial soil microbes comes from using sterol inhibiting fungicides like Nova/Eagle, Banner, Bayleton, etc. Modern insecticides don't suppress bacteria....some even stimulate bacteria.

Ben,

Grubs aren't the targeted insect in this case. But *most* of the Grubex sold in this country is Imidacloprid (Merit, Admire, etc) so it works on Cucumber Beetles.

4/28/2006 8:30:54 PM

Garden State Pumpkins

Just a quick observence...grubex sic imcloprid doesnt seem to bother the milpedes at all??? is this the case?

4/28/2006 8:51:29 PM

Garden State Pumpkins

Today I did a quick soil test to look and see if I had any effect on the worm..dug into the leaf mulch to a thermal layer and watery layer...about 8 inches down and the worms and millipedes are evident...worms were everywhere and aout a quater inch size! my next question is why are they down about eight inches and do the hatch so to speak in the spring..never seen this many before?

5/3/2006 8:21:15 PM

[email protected]

Chuck,

I honestly doubt that Millipedes would survive an all out Imidacloprid assault. But if they are surviving an accurate applicatioin then this is good. Millipedes are the chewers of the soil food web so we can live with them in most cases.

The worms are deep because some environmental condition at that strata suits them. Might be temperature.

5/3/2006 8:45:39 PM