ABSO-FUCKING-LUTELY WRONG!
Cannabis is NOT effected by 99.9% of any Mosaic out there!
Cannabis can get a HOPS viral....There are only a handful of them and I have yet to actually see that!
I have seen pics of some from CO that got a HOPS virus.
Cannabis can not get tobacco or Sunn Hemp virus, PERIOD! (Sunn Hemp is a bean)
@trollsmasher
This is likely Broad mites..
Not Russet's but Broad mites.
He could also have a root aphid problem, as it's presenting like one - A LOT!
Many times a bad mite infestation - Can cause a genetic change or an environmental pheno shift that effects the plant.. Never for the good either. You do see this after broad and russet mite infestations that get real bad.
I have seen a GG#4 that got the Russet mites bad, unchecked for most of the grow and into actual bloom when the bud was forming. Deep into bloom too.
Clones taken from that plant, and treated to eliminate the Russet's.
Resulted in stunted growth with lower THC counts and a more bushy/short plant.....This plant was Russet free BUT, the past infestation changed the genetic pattern's through damage to the gene structure....
This is a real thing.
With a plant that has had this problem for extended periods of time....
Best bet is to dump and burn
Clean EVERYTHING and EVERYWHERE!
Start over with new gear.....
You can cure the plants and try again but, if it does change the plants growth patterns or quality..
You now know why.