2 of 14 plants have tiny webs...spidermites?

Let me start by saying I've dealt with the terrorist little bastards (spider mites) before, years ago while helping friends with their plants.

Currently- I had a couple small cacti that I uprooted and planted 2 years ago, a mint plant and a kale plant all within a small grow space with 14 small weed plants. Well today I take a closer look at 1 of my monster crop clones thats not growing very quickly, compared to all the rest, & noticed a ton of tiny little webs infesting the leaves, crotch/leftover bud and stems! The weird thing is they have all been in a 3×4 foot space together for a solid month and a half now and only 1 of my baby clones has the infestation? 1 other small clone also had a couple little webs but nearly nothing compared to the bad one. Im wo dering, is there another bug out there that inhabits cannabis plants and leaves webs? I am wondering because EVERY time I read, hear or see evidence of spidermites they pretty well take over and quickly infest all nearby plants too. Any input is appreciated, anyone have any idea what or why this is?

Are the ones affected the same strain as all the rest? Some strains are more resistant, also if there is a warm pocket, like a back corner away from the intake, they might just prefer those plants because the "weather" is nicer. Look at the bottoms of your leaves, any little white or orange dots running around? Take a shop vac to them if you don't want to spray and suck the little fuckers right off the plant, you won't get them all but it will help.

Gotcha. Yeah I actually didn't get a closer look, I saw the teeny webs, mixed up a potent Azamax/dish soap cocktail in a spray bottle and went to town. Actually just to try to eff up their routine as much as possible I also took a toothpick and scrambled & twisted their webs until they weren't visible anymore..anything to make their life more difficult!
And yeah, these plants are monster cropped clones I took originally from a lucky awesome bagseed last year & have been working with ever since! It DOES seem to be pretty "pest" resistant, maybe either like ya said it ended up in a "goldilocks" spot in my grow space, or possibly they were just able to take hold cuz they're still young. Anyhow thanks for choppin' it up w me, any input helps!

If its mites try to drown them. Just water.. several times if needed. If that fails. Bag em, smoke them with nicotine or spray them with whatever before number get crazy, but still bag em, choke them out, even co2 can kill insects. Keep your space clean wipe down as much as possible.

Spray with spinosad