The only thing you haven't tried is patience. Plants don't react immediately. They sit and stew, then grow roots, then sit until the timing is right... Completely cleaning the roots was a major shock, then trimming, re-rooting, rooting hormone... shock, shock. (Why rooting hormone on an already rooted plant?) A plant with damaged/compromised roots can't take up water. Put it in some cactus soil, water when needed (don't water on a schedule) and be patient.
Baja_Costero said:Do not clean or trim the roots of an Echeveria unless you have a good reason to do so. They and their close relatives do not react well to this sort of treatment. I would recommend not meticulously cleaning the roots ever unless the soil they're in is very different from the one you prefer to use, and even then it's more a matter of 90% replacement than total replacement. Skip the rooting hormone and avoid the bonide (unless you have reason to believe there is an insect problem).
Did you water right after planting it? Your watering schedule should be based on soil moisture more than any particular feature of the plant. Water well (until water comes out the bottom, and maybe come back a second time 5-10 minutes later to better saturate the soil) and then wait until the soil is going dry at depth (not just at the surface). Which might take a week this time of year in strong light, but only you will really know.
I agree with Daisy that time and patience are the best prescription.
Baja_Costero said:Yeah, the gnats are probably not harming your plants, but they can be super annoying. I would think they require actual soil to reproduce... but apparently they can grow in your gritty mix too. Well, do what you need to do, but be aware that all they need is one plant left untreated to establish a reservoir and persist indefinitely. My preference is to put sticky flypaper near the surface of the soil to trap the flying adults, which reduces the problem to a dull roar, and I'll run a drench of insecticidal soap or imidacloprid in liquid form if they seem to be getting out of hand.
OrchidBob said:Sticky fly paper...nothing works better. The organic method.
DaisyI said:You have gnats? Or you are afraid you will have gnats? Gnats should not be a problem with cactus and succulents.
I do use Bonide but only after I've had an infestation of mealybugs or scale.
OrchidBob said:Bonide sells many different products.
Mealybugs are my main enemy along with the ants that farm them around.
Ultra-fine Horticultural oil spray works on the ones you can see.
Bonide makes many versions of oil spray but I think you a referring to something else.
@Daisyl What product do you use?