Those are outdoor plants? Has it been hot or raining lots? View attachment 1813496 looks like you have the Tobacco Mosaic Virus. Do you smoke cigarettes when your handling your plants?
I too was about to say looks like tmv, and I found that exact image too. Then I looked at the source which is the url I linked. There has been a fluctuation of posts regarding “TMV/Virus/Disease†related issues hitting various cannabis cultivation forums in 2011. We thought we would share all of the information we, and our friend Oswizzle have managed to gather regarding those issues. Although this was a new problem to Southern California, this issue has been commonly occurring in Northern California and other parts. The issues initially started in late 2009 where a large amount of forum subscribers on†ICMAG†and other dominant forums began posting a new plant “virus†they couldn't deal with. These so called “Virus†scares commonly turned out to be “Broad Mitesâ€. As this was a new issue at the time, we've collected an extensive amount of information and thought we'd share it with our members and patients. These Broad Mites can be taken care of simply by being treated as one would treat Spider Mites or any pest infestation. Please, all growers take the time to read the information below extensively as it will save you time and increase your cultivation knowledge substantially. Many of these signs are being associated with TMV/CMV (Tobacco/Cucumber Mosaic Virus), we personally warn against this train of thought due to the lack of respected sources (i.e. reputable scientifically thorough organizations). None have stated discovery that TMV/CMV exists in Cannabis Plants, we went forth and studied “Infected plants†brought to us by members and found results that state similarly, no TMV/CMV has been discovered, at least not in the plants individuals assumed were infected. From the tests we, and our personal friends conducted (with a scientific approach / tools) no signs leaning towards TMV were found, only a variety of mites and nutrient / genetic related issues.
This is true but everyone is learning and if you don't have scientific proof as to what is causing the deficiency then it's all speculation. But it's funny because this site is based on speculation, no one's got a scientist to sitting in a lab waiting for someone to bring in a sick plant so they can determine the sickness. And it's just people trying to help people figure things out. I have heard of the borad mite and you could very well be right and if you have those kind of facilities at your disposal to determine what's going on with your plant on the micro biological level...that's awesome.
Yes they are outdoor plants. Could the issue be nitrogen toxicity? I went back and looked at the plants and some also have leaves that look like this. Sorry for the not so great pic bad lighting issues with camera.