The case of the invisible spider mites (false positive?)

I got small yellow spots appearing on a great deal of plants, although their shape and pattern seems eerily similar to spider mite spots...everything else doesn't jive with what you expect from an infestation.

1 although it's spread to about half my plants, no webs anywhere...
2 look on the underside....no specks and nothing moving
3 funny thing...my Jean Guy is affected, but a Pk plant right next to it ...in fact... All my pks ...a dark healthy green...

I suspect heat stress may have played a role early on during growth phase...but otherwise its the same old fertilizer recipe and this never happened before...

Pics?

New strain?
Pics?

My file name is too big...the site thinks its not an allowed extension...finding a work around...

Thrips root aphids or ph ect

PH ect?

I seriously can't find anything crawling on the plants...however hard I look. This op is sparkle clean...you can eat on the floor. We get the odd millipedes and crickets that winter in the basement but I've never had any infestation so far. Shouldn't there be webs for mites? And aren't thrips and aphids visible?

Are any of the leaves on the infected plant twisting or turning?

Whodatt said:

Are any of the leaves on the infected plant twisting or turning?

Click to expand...

Nope. We harvested and found no mites. No webs, no twisted leaves. Must have been ph or fertilizer related.

Pics would help.

if it looks like this then its thrips most likely. look in grizzly adams stickied thread in this form for answers, also Spinosad (sp?) works.

Is that the only pic you have?

Thanks for the info. It wasn't bugs, ph might have been off though.